Me: *blinks* Him: Now we are done let’s code the entire f-ing universe edit: dang this was a year ago when I didn't know how to code and now I feel bad for commenting this. Amazing video
@@universenerdd YOU are dumb, Pluscrafter NEVER said Python was compiled and at least Pluscrafter knows the difference between their, they're and there
@@e.6z1 okay, so what i meant was interpreters are not compilers, if you look at the original comment it makes sence, and i do know the difference, if that was what you were implying
It took TH-cam 2 years to recommend this amazing tutorial.... Really well done mate! It's inspired me enough to dabble on my own version. Not sure about an entire language but could be really useful for making CLIs.
Dude, thanks. You don't know me, but I am a solo game designer with a solid "B" in art skills, but a "C-" in programming. I have been trying to implement a basic like script interpreter in a python program I am making. Been trying for several years to get it right. This tutorial is EXACTLY what I needed. Thanks again.
Thanks! I do plan on doing that soon. The later episodes in this series have gotten more messy and complicated, and I'm planning on redoing this series first. I also am doing a simpler 4 part series on making a math interpreter before that. So hopefully I get around to doing a compiler soon :)
Funnily enough, when you are able to do that, you can call your language Turing-complete (it can recreate itself, in itself), and is mostly a good-enough programming language for most basic tasks.
@@0x1EGEN Your original reply: "You mean "self-hosting", turing complete just means it can theoretically compute anything. en.wikipedia.org/wiki/Self-hosting_(compilers)" An answer: no. A self-hosting compiler can compile itself, yes, but a language can be interpreted, and you could still make another language with it. Being Turing-complete means that it can simulate a Turing-machine. Taken from Wikipedia: "For example, an imperative language is Turing-complete if it has conditional branching (e.g., "if" and "goto" statements, or a "branch if zero" instruction; see one-instruction set computer) and the ability to change an arbitrary amount of memory (e.g., the ability to maintain an arbitrary number of data items)." That means, that as long as you have if statements and some way to loop (be it goto statements or a for loop), your language is turning complete.
oh your lexer is so nice . it actually handles problems. my lexer just advances over them . so once/if mine ever becomes a compiler instead of a interpreter. literally everything will compile but whether or not it will run is another story entirely.
This is great. Been working my way through Nand 2 Tetris on my own. I made it through the hardware portion all right but once it got to writing the assembler I felt completely lost. Hoping this will give me the nudge I need, so far I'm loving the content and can't wait to finish.
I’m always so envious of seeing young people with that drive. When I was 15 all I cared about was playing videogames and being cool, such useless things
I thought that the output of "1.2+1" would be "float: 1.2 | plus | int: 1", however I've noticed that it skips the plus sign entirely. It does that for every first character behind a number. I checked my code (I translated your code into lua and thought I messed something up) and then was suprised to see that indeed, it skips the first character that comes after any number in the make_number function. There is an easy fix to it tho! After the loop in the make_number function you need to decrement the self.pos by 1. (self.pos -= 1) After doing that it now correctfully translate the input "1.2+1" to "float: 1.2 | plus | int:1" instead of the output given above. I do not know if the same issue has happened to anyone else before, but if it did it would be nice if you could pin this message, it was not as easy to track down as it might sound from above. Nice video nontheless! It helped me out a lot!
Are you sure you didn't call self.advance() in the while loop of make_tokens() as well, after tokens.append(self.make_number())? That would result in calling self.advance() twice, which creates the issue you ran into. I have the code in the video and I was not able to reproduce your issue at all.
I've got like 3 yrs of experience in C#, but only like 3 months in Python. Probably not this I should do with only 3 months of exp. but I strongly believe that my C# skills will help. Amazing tutorial ngl
Really thx for this Toutorial! This was my first Toutorial that I used for Python ( If I don’t mention the Python Code in my Java File and 8 Videos of Python but I didn’t test them...) So I learned here not just how to make a programming language, I learned even Python with this Toutorial! Really thx for it!
Awesome, I know have a fully working lexer and I am working on a programming language known as jublee. Which already has the basic features of addition , sub , mul and div.
The error output looks so neat! Copilot suggested me how to get output like this: calc> 12+23.3+g Illegal Character: g File , line 1 12+23.3+g ^ Error representation should be: result = f'{self.name}: {self.details}' result += f' File {self.pos_start.filename}, line {self.pos_start.ln + 1}' line = self.pos_start.filetext[:self.pos_start.col+1] result += f' {line}' result += ' ' + ' ' * (self.pos_start.col) + '^' return result
Good tutorial! I tried this once before when I was still pretty new at python and I didn't understand it so I gave up after the first two vids. But, now that I'm more familiar with the syntax of python, I can actually understand everything in this tutorial.
Im creating a language called Neptune, 'cuz it is my favorite planet. I want to make it the most easy to understand programming language using a lot of simple keywords
7:11 really really important flaw: the while loop will keep appending same char to the string indefinitely once it starts. there's nothing to advance it. ok you caught this at 10:31, this took me a couple watches to see if you put that somewhere in the video
Sorry CodePulse, I have some questions.. :) 1. Python is a language that is a bit slow compared to other lnguages. So can another language created using python be faster than Python ? 2. Does this tutorial series include everything in BASIC Language ? 3. What are the basics of the Programmig Language ? Many thanks to the tutorials you created ^)
1. A language created in Python can be faster if (a) it is compiled to machine code, or (b) it is compiled to byte-code to be interpreted by some other application such as JVM (Java virtual machine), or WASM (WebAssembly to allow it to run on the web). 2. No, as the series progresses the language differs more from the basic language. 3. I'm not sure what you are asking here. Your welcome :)
I think I got something wrong. I followed the tutorial, but what happens when I do 1 + 1 is strange. basic > 1 + 1 [, , ] NEVERMIND I forgot to put __ after __repr
To speed things up you might want to set self.length to len(text) in __init__, else you change the complexity of advance to O(n) where n is the length of the text.
When I put a space in between my numbers it errors how do I fix that, I looked back through the video and couldnt find anything I did wrong so please help.
a year ago i wanted to create a programming language but i don't even know what is class in python,but now i can code in rust,understanding OOP and little bit of data structure and algorithm
I personally would've used enums for the token system, I'll just try to follow along with those, hope it isn't too much of a struggle (I'm using C++, and yes I know python doesn't have them builtin but there is a builtin lib for that)
Thanks. My aim for this series is to improve on HowCode's tutorials, as his original series didn't use proper techniques, and he rushed his newer series in my opinion. I also plan on making the series much longer and add a lot more features that are missing from HowCode's tutorials (for example functions with arguments).
@Najmul hossain As in the minimax algorithm in game theory? It's not really the type of thing that I had planned for the channel, and there seems to be plenty of explanations out there already. But if enough people wanted it, I would definitely consider it.
how did you get it so that when you click new terminal it says just terminal> and not the path to the folder you are working in? Also I copied everything from github and type in the terminal 'python3 shell.py' nothing happens! Edit: I have the Python extention for VScode in version 2018.3.0
On windows you can use the "prompt" command to change what text shows up. If you are using windows 10, it preinstalls a python3 program, but this isn't the real python, rather a link to the microsoft store to install python. This could be why nothing happens. Try just run "python" instead of "python3", otherwise you may have to update your path.
seems difficult but i want to get into it ;) for the first time watching i just rewrite your code. When you began to improve Error class my brains just broke. I think i will watch this vid till I understand it enough good. At all, good tutorials, one of the best ive found. Unfortunately, in Russian programming segment there is no tutors how to create your own compiler/interpreter. But it seems like i found an amazing one in English sorry for broken English
Thank's for your comment! Your English is not bad. I think I overcomplicated this series, and I intend to simply things in my future tutorials :) Good luck!
great video . I wanted to ask : 1. Should keywords like *if* , *for* , *function* are implemented at this stage , I mean in the lexer? 2.Do we also implement a comment elimination strategy , like we do with spaces , in this phase?
The code does not work, whenever I run it, I enter the expression into the prompt and then the prompt keeps staying the same, like if you hit enter, nothing happens, all the cursor does is go down one line
I dont really understand why you used a while loop for the lexer. A for-loop would have made it much easier, because you wouldnt need the advance()-function, cleaning up the code. Additionally it would have made the code execution much faster, which is an important factor if you write an intepreted language inside of an intepreted language
By the way, you should be able to run a python script by just typing the filename (no extension needed). Just type in "shell" and hit enter. It works on my end, at least (windows 7).
CodePulse yeah man! You write some super clean code! I’m trying to make my own language just for fun and wow this has help a lot. It’s really really fun to! Keep it up man!!
hello bro! awesome tutorial! im getting an error, the final part, when you make the file and line error, when i start the py file it shows first: "Illegal Character: '&' ", then shows the shell, and the file and line error doesnt works. I dont know if youre gonna see this, but i wish you see, bc i always wanted to make my own program lang. thx for the awesome tutorial
if i knew how to make a programming language, I would call it OceanCode and code for making text with another font like hello world is anyways my favorite font is indeed consolas
i get the error 'import nide' (nide is my language) at the start of the shell file.... no idea why. I even checked the github and it all was the same, im using python 3.9 can anyone help please! edit: i also tried renaming everything to what he used and same result
I would prefer a language that is as non-verbose as possible, ideally with no reserved words but with standard class libraries, with as little syntactic candy as possible. The best way to do this is start each block with a symbol indicating block type, followed by a single line block header or entire short block. NO BLOCK END MARKERS... Instead use tab sequences (enforced by a strict editor, perhaps with the entire program as a treeview control) to indicate block depth... memo1 : UI.Memo {textbox control - only one form of comments allowed, NESTED COMMENTS! so this close bracket is required} * 10 {Loop 10x} memo1+=``Hello World`` {adds another Hello World. Grav `, apostrophe ' or quotes " indicate text start, next instance closes, double = new line after text} list1 : UI.List {ListBox control} * 0..10 {Loop 0 to 10.. * n=0..10 if you need a loop counter} list1+='Hello World' {adds another Hello World list item, += is overloaded to mean 'append list with new item'} list1 : UI.List; * 10; list+="Hello World" {short blocks can be on one line separated by semicolons but cannot contain SUB BLOCKS!} There is no better language paradigm in terms of pro programming speed, potential power and compiler efficiency in perfect balance without hogging reserved words. .`some text` could mean console output. `text` variable `text` should automatically convert variable to text. All types have a text output function, else #ERROR# is displayed * 10; .``Hello World`` {SWEET!} * n=1..10; .`Hello World ` n ```` {if a string ends with a variable followed by a new line it's a bit messy, else it's a pretty clean system} now let's dirty it with some markup.. * n=1..50++5; .~n`Hello World`~b~i~$00ff00~fill($000000) n```` {step n by 5... normal text then bold, italic, green ink, black background number} * n=1..10**5; .~n`Hello World`~b~i~$00ff00~fill:$000000 n```` {step n * 5... : param1, param2, ... vs (param1, param2, ...) * n=1..50//5; .~n`Hello World`~b~i~$00ff00~fill:$000000 n```` {step n * 50/5=10... : param1, param2, ... vs (param1, param2, ...) now let's sort out all those bloated HTML tags.... and become ~text and ~TEXT. ~p~p`Here's some text`~P~P {the end tags could also still be left off, as in HTML} NO RESERVED WORDS (but standard libraries), NO CODE BLOCK PARENTHESES (only single line blocks or indented blocks, preferably in a treeview control).
I have researched into this stuff before and now I'm finally doing it, thanks to your channel. One question though, how come you don't get errors that are apparent in mine? Like for example, the lines saying "tokens.append(Token(MUL))" etc. every single one of them tells me I haven't passed a value.
I have a question. How do I import basic? I get the error - Traceback (most recent call last): File "main.py", line 5, in result, error=basic.run(text) NameError: name 'basic' is not defined
@@CodePulse yas they were... but i got it to work. i had renamed the file to hellothere.py.... I use repl.it so i got some help. they told me to rename it to basic.py and it magically worked lol. :D
this error pops up when i try the code: Traceback (most recent call last): File "c:\Users\ASUS\Desktop\sapphire\shell.py", line 5, in result, error = basic.run(text) ^^^^^^^^^ AttributeError: module 'basic' has no attribute 'run'
Hey... Please Help! when I run it says: Traceback (most recent call last): File "C:/Users//PycharmProjects/mainWORKSPACE/Basic/shell.py", line 5, in result, error = basic.run(text) File "C:\Users\User\PycharmProjects\mainWORKSPACE\Basic\basic.py", line 116, in run tokens, error = lexer.make_tokens() ValueError: not enough values to unpack (expected 2, got 0) How do I fix it PLEASEEEE! I LOVE IT AND I DONT WANT TO END IT HERE
Me: *blinks*
Him: Now we are done let’s code the entire f-ing universe
edit: dang this was a year ago when I didn't know how to code and now I feel bad for commenting this. Amazing video
@Yousef GG! sdhgasuydgsduygaysudgyasdgyaudhahdyaghyiuasdgyasgy!!!!
thats when you blink very slow
@Yousef GG! LANGUAGE
@@dominiktoser8531 dafaq
He speaks quite fast, this causes some times different words to be pronoucned wrong. For example he means to say LEXER and i hear LECTURE or LETUCE.
Imagine running an interpreted language over an Interpreted language.
Haha yes
Many compilers do that. I think it's called bootstraping and there is a python interpreter that is programmed in python (pypy).
@@CodePulse Lol
@@universenerdd YOU are dumb, Pluscrafter NEVER said Python was compiled and at least Pluscrafter knows the difference between their, they're and there
@@e.6z1 okay, so what i meant was interpreters are not compilers, if you look at the original comment it makes sence, and i do know the difference, if that was what you were implying
It took TH-cam 2 years to recommend this amazing tutorial....
Really well done mate! It's inspired me enough to dabble on my own version.
Not sure about an entire language but could be really useful for making CLIs.
Thanks! Yes definitely useful for CLIs, and also for parsing your own custom data file format.
And it took TH-cam 5 years to recommend it to me, lol.
@@Markadown me to
Dude, thanks. You don't know me, but I am a solo game designer with a solid "B" in art skills, but a "C-" in programming. I have been trying to implement a basic like script interpreter in a python program I am making. Been trying for several years to get it right. This tutorial is EXACTLY what I needed. Thanks again.
nice
This is amazing to be honest. I've never seen anyone else code as cleanly as you.
Do you think you could make a video on making a compiler next time?
Thanks! I do plan on doing that soon. The later episodes in this series have gotten more messy and complicated, and I'm planning on redoing this series first. I also am doing a simpler 4 part series on making a math interpreter before that. So hopefully I get around to doing a compiler soon :)
@@CodePulse Thanks for the quick reply! I look forward to future videos :)
This isn't cleanly written. There is lots room for abstraction here.
You mean compiler that actually writes machine code?
@@10F2C Completely forgot about this comment ngl. I meant down to assembly, similar to clang and GCC
Great tutorial mate, but can we just take a moment to gaze in awe at this man's typing speed and code cleanliness like sheesh
now create another language with that basic language you're creating
Funnily enough, when you are able to do that, you can call your language Turing-complete (it can recreate itself, in itself), and is mostly a good-enough programming language for most basic tasks.
Good luck with the speed of it
@@dimitar.bogdanov You mean "self-hosting".
@@0x1EGEN Your original reply:
"You mean "self-hosting", turing complete just means it can theoretically compute anything. en.wikipedia.org/wiki/Self-hosting_(compilers)"
An answer: no. A self-hosting compiler can compile itself, yes, but a language can be interpreted, and you could still make another language with it.
Being Turing-complete means that it can simulate a Turing-machine. Taken from Wikipedia:
"For example, an imperative language is Turing-complete if it has conditional branching (e.g., "if" and "goto" statements, or a "branch if zero" instruction; see one-instruction set computer) and the ability to change an arbitrary amount of memory (e.g., the ability to maintain an arbitrary number of data items)."
That means, that as long as you have if statements and some way to loop (be it goto statements or a for loop), your language is turning complete.
I'm actually doing that right now
4:40 i don't understand much of the code, but i just like the smooth self line
self
self
self
self
*self*
self
self
self
*self*
Why did you make an *_as_string_* method not just use the built in Python's *___str___* method?
I hadn't really used Python much in ages so never though of it then. I realized a while later but never bothered to change it.
@@CodePulse sorry im new to python and i recieve ths error but i dont have str in my code
AttributeError: 'str' object has no attribute 'fn'
@@jaysonlana9147 If you still have that issue, it means somewhere you've typed self.fn instead of ln. Probably in def copy()
@@anshbarhate2791the comment was 3 years ago
Awesome! Thanks to all channels which shows this topic. I always wondered how this works :) Thanks to all!
finally, a version of BASIC that is actually basic
how help please
"We can multiply numbers": 1 + 2
Python default calculation: 1 + 2
1 + 2 = 6
SIKE its 3
@@mikethegamedev no it's 69,420
@@mikethegamedev damn bro I nearly did my homework wrong because u said it was 6
@@aw1lt ...
10:35: "generates all the tokens correctly..."
Me: *runs program*
output: [ ]
Input : 9 * 9
Output :
Input : d
Output : Illagel Char : d
Input : d * 9
Output :
I have the same problem is there any fix
@@gamingforever65 Yes please encountering the same issues
It should be at the tokens list, the [] should have a space in between
how do i fix this issue?
oh your lexer is so nice . it actually handles problems.
my lexer just advances over them .
so once/if mine ever becomes a compiler instead of a interpreter.
literally everything will compile but whether or not it will run is another story entirely.
This is great. Been working my way through Nand 2 Tetris on my own. I made it through the hardware portion all right but once it got to writing the assembler I felt completely lost. Hoping this will give me the nudge I need, so far I'm loving the content and can't wait to finish.
Nice, my brother is doing that too
Nice. I'm 15 and thinking of creating one in the future.
I might name it : Pascala
Pascala's name is derived from Pascal + Scala
ill take that m8
Don't share your project names with strangers until you've created something. Bad, bad idea
I’m always so envious of seeing young people with that drive. When I was 15 all I cared about was playing videogames and being cool, such useless things
Sounds gay af tbh
@@dimitar.bogdanov thats the stupidest thing I’ve ever heard. The name, or even the idea don’t matter, the execution does
I thought that the output of "1.2+1" would be "float: 1.2 | plus | int: 1", however I've noticed that it skips the plus sign entirely.
It does that for every first character behind a number. I checked my code (I translated your code into lua and thought I messed something up) and then was suprised to see that indeed, it skips the first character that comes after any number in the make_number function.
There is an easy fix to it tho! After the loop in the make_number function you need to decrement the self.pos by 1. (self.pos -= 1) After doing that it now correctfully translate the input "1.2+1" to "float: 1.2 | plus | int:1" instead of the output given above.
I do not know if the same issue has happened to anyone else before, but if it did it would be nice if you could pin this message, it was not as easy to track down as it might sound from above.
Nice video nontheless! It helped me out a lot!
Are you sure you didn't call self.advance() in the while loop of make_tokens() as well, after tokens.append(self.make_number())? That would result in calling self.advance() twice, which creates the issue you ran into. I have the code in the video and I was not able to reproduce your issue at all.
The problem is just you. There is something wrong with your code. You can copy the ep1 code from github to confirm that you did everything correctly.
I've got like 3 yrs of experience in C#, but only like 3 months in Python. Probably not this I should do with only 3 months of exp. but I strongly believe that my C# skills will help. Amazing tutorial ngl
Really thx for this Toutorial! This was my first Toutorial that I used for Python ( If I don’t mention the Python Code in my Java File and 8 Videos of Python but I didn’t test them...) So I learned here not just how to make a programming language, I learned even Python with this Toutorial! Really thx for it!
Absolutely great job for a talented mad man like you. Looks like this series is gonna be sick. Thanks for sharing this! Gonna learn a lot from this
I can’t believe this dude wrote a full lexer without any modules. Great job
This channel is underrated...
You're just a god, I barely understand English, but I understand you more than compatriots
That's great to hear! Thanks
Awesome, I know have a fully working lexer and I am working on a programming language known as jublee. Which already has the basic features of addition , sub , mul and div.
link it and ill try it out anbd give my own feedback
The error output looks so neat!
Copilot suggested me how to get output like this:
calc> 12+23.3+g
Illegal Character: g
File , line 1
12+23.3+g
^
Error representation should be:
result = f'{self.name}: {self.details}'
result += f'
File {self.pos_start.filename}, line {self.pos_start.ln + 1}'
line = self.pos_start.filetext[:self.pos_start.col+1]
result += f'
{line}'
result += '
' + ' ' * (self.pos_start.col) + '^'
return result
Bro you are a genius! I came for the custom OS project but I'm gonna have to watch your entire back catalogue!
Thanks! Hope this series is as good as my operating system one.
@@CodePulse im excited to finish this one quickly, and excited to see where the operating system goes!
I always wanted to make my own programming language. And I find perfect tutorial from 2018. Thank you!
THIS WAS EXCELLENT! WELL DONE MATE!!
wow this is genuinely quality content 10/10
WTF youtube's algorithm is already in 2080, I was thinking about creating a language yesterday and now I get this in my recommended
same
Google hears ur stuff or wut ever ur saying
We are making a programming language with python which is an easy language
just imagine how the first programming would have been created
Well we do use C++ for Python which derives itself from assembly languages which derives itself from machine language
@@supersani21 I think python's written in C.
@@kartikeykushwaha3622 C++ can run C code btw so its not really a big difference.
@@GDPlainA It is. C++ is not C.
Assembly, and assembly was created with hex. Altrogut assembly is easy created.
Good tutorial! I tried this once before when I was still pretty new at python and I didn't understand it so I gave up after the first two vids. But, now that I'm more familiar with the syntax of python, I can actually understand everything in this tutorial.
That's awesome to hear!
Finally, my next project to test my 1 month of programming experience!
Im creating a language called Neptune, 'cuz it is my favorite planet. I want to make it the most easy to understand programming language using a lot of simple keywords
Good luck with it!
@MoolsDogTwo hey me too!
Make sure to make it beautiful bcuz Neptune is a beautiful planet 😁👍
Thank you for sharing this very clear and usefull material! it is amazing, congratilations!
I’m making a language called quil (yes I know there is only one “L”) this helped a lot
What a coincidence (look at my name)
Thank you so much for this tutorial! Very well explained ;)
I'll try making one in javascript!
Thanks again!
7:11 really really important flaw: the while loop will keep appending same char to the string indefinitely once it starts. there's nothing to advance it. ok you caught this at 10:31, this took me a couple watches to see if you put that somewhere in the video
Oh, man! I could watch this all day long.
i ran into a problem while coding and i literally searched for 45min befor i realised that i miss spelled a variable.
Btw great Video thanks ;)
Im enjoy with your video...great teaching 👍👍👍❤️❤️
Thank you :)
Sorry CodePulse, I have some questions.. :)
1. Python is a language that is a bit slow compared to other lnguages. So can another language created using python be faster than Python ?
2. Does this tutorial series include everything in BASIC Language ?
3. What are the basics of the Programmig Language ?
Many thanks to the tutorials you created ^)
1. A language created in Python can be faster if (a) it is compiled to machine code, or (b) it is compiled to byte-code to be interpreted by some other application such as JVM (Java virtual machine), or WASM (WebAssembly to allow it to run on the web).
2. No, as the series progresses the language differs more from the basic language.
3. I'm not sure what you are asking here.
Your welcome :)
I think I got something wrong. I followed the tutorial, but what happens when I do 1 + 1 is strange.
basic > 1 + 1
[, , ]
NEVERMIND I forgot to put __ after __repr
To speed things up you might want to set self.length to len(text) in __init__, else you change the complexity of advance to O(n) where n is the length of the text.
Are you saying the Python `len` function is O(n)?
@@CodePulse aaah I've done some tests and it seems to be O(1), apparantly Python builtins (Dict, Lists etc) keep track of the size internally.
@@unh0lys0da16 Makes sense, that's what I assumed. Different from C's strlen function which is O(n)
Thank you so much for making this. Subscribed!
thanks for the tutorial, you have good programming skills
When I put a space in between my numbers it errors how do I fix that, I looked back through the video and couldnt find anything I did wrong so please help.
Never midn I fixed it by adding it to the character list under Lexer and doesnt seem to have broken anything and works fine
You're fairly damn good at explaining things.
Much much thanks for your videos! It helped me a lot while other tutorials and series did not
a year ago i wanted to create a programming language but i don't even know what is class in python,but now i can code in rust,understanding OOP and little bit of data structure and algorithm
That is amazing! Well done, and good luck
Thanks you
This video reminds me that there is always a better programmer out there.
I've been working on the class Error so long, now I can't pronounce the word 'error'
Haha
FYI, it’s [ɜɹːɚ]
I don't get the part of where it states whether the no. is a integer or not
If the number of dots/decimal points in the number is 0, then it can be an integer, otherwise it needs to be a float.
random quesion:what does self mean and why did you use it
I personally would've used enums for the token system, I'll just try to follow along with those, hope it isn't too much of a struggle (I'm using C++, and yes I know python doesn't have them builtin but there is a builtin lib for that)
How does the computer know what is basic
Nice video. But please just don't copy the same thing HowCode does...
Thanks. My aim for this series is to improve on HowCode's tutorials, as his original series didn't use proper techniques, and he rushed his newer series in my opinion. I also plan on making the series much longer and add a lot more features that are missing from HowCode's tutorials (for example functions with arguments).
Okay. That's fine. I thought you did it because you didn't know what to do. But cool.
@Najmul hossain As in the minimax algorithm in game theory? It's not really the type of thing that I had planned for the channel, and there seems to be plenty of explanations out there already. But if enough people wanted it, I would definitely consider it.
The author @you at the final episode! @@
what is the commmand
how did you get it so that when you click new terminal it says just terminal> and not the path to the folder you are working in?
Also I copied everything from github and type in the terminal 'python3 shell.py' nothing happens!
Edit: I have the Python extention for VScode in version 2018.3.0
On windows you can use the "prompt" command to change what text shows up.
If you are using windows 10, it preinstalls a python3 program, but this isn't the real python, rather a link to the microsoft store to install python. This could be why nothing happens. Try just run "python" instead of "python3", otherwise you may have to update your path.
@@CodePulse thanks, just changing pythin3 to python sorted it. (:
If I did this in a different Programming language, do I follow these steps or should I translate it?
well you cant run python in an interpreter/compiler that is not for python ;)
A lexer is responsable turn source code into tokens, these tokens are identifiers, keywords, operators, delimiters and literals.
Please help me, it is showing that module basic has no attribute run, if i try to use 'from basic import run' ,it shows cannot import run from basic
my teacher let me make an a compilator for my exam, i want to see his face when he try to prove the nekolenguage
This is... actually really good.
This man types at the speed of sound, I havent even finished typing class Token: and the video is already over like holy fuck
Thank you I enjoyed this I always wanted to do something like this
Now try to make one with assembly.
Seems like the easiest language to understand out of the few I've seen! How did you come across it?
wait i have a doubt how do you index the line ???
like the how do you make python show the line in which your typing!!!
Are you talking about the line number @ 15:28? If so, this isn't actually getting the line number in the terminal, it's always line 1.
You dont have to type tons of 'elif' use a dict to map symbol to its value
you're amazing!! Great tutorial
I know this video is 4 years old, I will just say that you don't have to do
"'" + char + "'"
instead, you can do f"'{char}'"
when i try to use floats, it says "Illegal Character: '.'"
You probably have a mistake in your code
Did you get it fixed? I have the same issue.
seems difficult but i want to get into it ;) for the first time watching i just rewrite your code. When you began to improve Error class my brains just broke. I think i will watch this vid till I understand it enough good.
At all, good tutorials, one of the best ive found. Unfortunately, in Russian programming segment there is no tutors how to create your own compiler/interpreter. But it seems like i found an amazing one in English
sorry for broken English
Thank's for your comment! Your English is not bad. I think I overcomplicated this series, and I intend to simply things in my future tutorials :) Good luck!
great video . I wanted to ask :
1. Should keywords like *if* , *for* , *function* are implemented at this stage , I mean in the lexer?
2.Do we also implement a comment elimination strategy , like we do with spaces , in this phase?
1. It's up to you, I prefer to do it in the lexer as seen in one of my later tutorials.
2. Yes that sounds right
thanks for your tutorial @CodePulse sir
i have a problem, everytime i run my code and put an illegal character it says "Illegal Character: '&'File , line 1" without any space
The code does not work, whenever I run it, I enter the expression into the prompt and then the prompt keeps staying the same, like if you hit enter, nothing happens, all the cursor does is go down one line
Not sure why that might be happening but you can compare your code to mine here: github.com/davidcallanan/py-myopl-code
@@CodePulse Thank you
@@CodePulse Also, Do you know how I could add more builtin fuctions, like a generic way to do so
I have a question. Could you make a tutorial on one more advanced or use C++?
I dont really understand why you used a while loop for the lexer. A for-loop would have made it much easier, because you wouldnt need the advance()-function, cleaning up the code. Additionally it would have made the code execution much faster, which is an important factor if you write an intepreted language inside of an intepreted language
While loops are faster than for loops
By the way, you should be able to run a python script by just typing the filename (no extension needed). Just type in "shell" and hit enter. It works on my end, at least (windows 7).
If he did that, viewers following along on Linux would suffer
@@angelcaru it doesn't work on linux?
@@skaruts it does if you make it executable and put #!/usr/bin/python3 on the first line
Can you explain how you suddenly added attributes to the lever class
Dude! Great video!!!!
Thanks
CodePulse yeah man! You write some super clean code! I’m trying to make my own language just for fun and wow this has help a lot. It’s really really fun to! Keep it up man!!
hello bro! awesome tutorial! im getting an error, the final part, when you make the file and line error, when i start the py file it shows first: "Illegal Character: '&' ", then shows the shell, and the file and line error doesnt works. I dont know if youre gonna see this, but i wish you see, bc i always wanted to make my own program lang. thx for the awesome tutorial
Im having this same issue. Did you ever figure it out?
@@reversecascade8152 nope
@@umplayerbr1481 I restarted VS Code which might've fixed it but I tried some other things so it could have been one of those
@@reversecascade8152 can you tell me what things you did?
i already tried restarting VS Code
Hey i wanna make another programming language named Globe, how do i add custom built-in functions again?
th-cam.com/video/1k_N0oUOpjY/w-d-xo.html
zgavY will be the best! Can't wait to code in zgavY
@FichDich InDemArsch yep. The syntax is very cringe as well..
I wrote it in C#. Where can I send you so you may review it?
if i knew how to make a programming language, I would call it OceanCode and code for making text with another font like hello world is
anyways my favorite font is indeed consolas
Friend, in the input, it says runtime error lost sys.stdin
How to fix?
@CodePulse
i get the error 'import nide' (nide is my language) at the start of the shell file.... no idea why. I even checked the github and it all was the same, im using python 3.9
can anyone help please!
edit: i also tried renaming everything to what he used and same result
Are they in the same file folder?
Yeah, I know kinda late
I would prefer a language that is as non-verbose as possible, ideally with no reserved words but with standard class libraries, with as little syntactic candy as possible. The best way to do this is start each block with a symbol indicating block type, followed by a single line block header or entire short block. NO BLOCK END MARKERS... Instead use tab sequences (enforced by a strict editor, perhaps with the entire program as a treeview control) to indicate block depth...
memo1 : UI.Memo {textbox control - only one form of comments allowed, NESTED COMMENTS! so this close bracket is required}
* 10 {Loop 10x}
memo1+=``Hello World`` {adds another Hello World. Grav `, apostrophe ' or quotes " indicate text start, next instance closes, double = new line after text}
list1 : UI.List {ListBox control}
* 0..10 {Loop 0 to 10.. * n=0..10 if you need a loop counter}
list1+='Hello World' {adds another Hello World list item, += is overloaded to mean 'append list with new item'}
list1 : UI.List; * 10; list+="Hello World" {short blocks can be on one line separated by semicolons but cannot contain SUB BLOCKS!}
There is no better language paradigm in terms of pro programming speed, potential power and compiler efficiency in perfect balance without hogging reserved words.
.`some text` could mean console output. `text` variable `text` should automatically convert variable to text. All types have a text output function, else #ERROR# is displayed
* 10; .``Hello World`` {SWEET!}
* n=1..10; .`Hello World ` n ```` {if a string ends with a variable followed by a new line it's a bit messy, else it's a pretty clean system}
now let's dirty it with some markup..
* n=1..50++5; .~n`Hello World`~b~i~$00ff00~fill($000000) n```` {step n by 5... normal text then bold, italic, green ink, black background number}
* n=1..10**5; .~n`Hello World`~b~i~$00ff00~fill:$000000 n```` {step n * 5... : param1, param2, ... vs (param1, param2, ...)
* n=1..50//5; .~n`Hello World`~b~i~$00ff00~fill:$000000 n```` {step n * 50/5=10... : param1, param2, ... vs (param1, param2, ...)
now let's sort out all those bloated HTML tags.... and become ~text and ~TEXT.
~p~p`Here's some text`~P~P {the end tags could also still be left off, as in HTML}
NO RESERVED WORDS (but standard libraries), NO CODE BLOCK PARENTHESES (only single line blocks or indented blocks, preferably in a treeview control).
I have researched into this stuff before and now I'm finally doing it, thanks to your channel. One question though, how come you don't get errors that are apparent in mine? Like for example, the lines saying "tokens.append(Token(MUL))" etc. every single one of them tells me I haven't passed a value.
You might be missing the default value in the Token class, make sure in the `__init__` method it has `value=None`.
Dude... This is amazing! I have tests coming up but I'm creating my own coding language called Kozo! :D
I have a question. How do I import basic? I get the error - Traceback (most recent call last):
File "main.py", line 5, in
result, error=basic.run(text)
NameError: name 'basic' is not defined
nvm i got it to work
and it isnt working again... pls help! i even copied the code from github but it isnt working
Are both files definitely in the same folder?
@@CodePulse yas they were... but i got it to work. i had renamed the file to hellothere.py.... I use repl.it so i got some help. they told me to rename it to basic.py and it magically worked lol. :D
What does it mean by "lexer takes no arguments" error
you didnt code the initializer correctly
@@jimmlmao OK so what's the right way to do it?
@@PDsChannel0112 To write the __init__ method correctly
this error pops up when i try the code:
Traceback (most recent call last):
File "c:\Users\ASUS\Desktop\sapphire\shell.py", line 5, in
result, error = basic.run(text)
^^^^^^^^^
AttributeError: module 'basic' has no attribute 'run'
Hey, how's everything going?
Great vid, everything worked, except the fact that it doesn't show the result, only the tokens, can you help?
Thanks you will not see result until ep 3.
@@CodePulse oooohh, ok, ty!
In the function advance() at self.text[pos] it says its not defined could you please help me ?
AWESOME video, thanks
low level languages overall are better for it
Hey... Please Help! when I run it says:
Traceback (most recent call last):
File "C:/Users//PycharmProjects/mainWORKSPACE/Basic/shell.py", line 5, in
result, error = basic.run(text)
File "C:\Users\User\PycharmProjects\mainWORKSPACE\Basic\basic.py", line 116, in run
tokens, error = lexer.make_tokens()
ValueError: not enough values to unpack (expected 2, got 0)
How do I fix it PLEASEEEE! I LOVE IT AND I DONT WANT TO END IT HERE
when you say follow along with any other language
does that mean any other ver of python or like c++ or java?
Yes any other language like c++ or java. There will of course be many differences, but the core concepts remain the same.
I had to write a C to MIPS32 compiler in university. TBH this looks much nicer.