#59 Python Tutorial for Beginners | Operator Overloading | Polymorphism
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- เผยแพร่เมื่อ 23 พ.ย. 2024
- Python Tutorial to learn Python programming with examples
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Sir your statement : "marks is not the way of comparing" won my heart
"This is horrible way to compare two students by marks"
I Love this line👍🙂
ikr
bro i also loved it so much!! what a quencidence
After so so many years, I have finally understood operator overloading!
😱😱😇
Exactly
Still i can't understand operator overloading 😔😓
@@alimdeen6921 YOU ARE RIGHT, THIS GUY Showing his nose after traveling through out the universe, actually he has to tell first simple example then he can show his vaast variety of expereince on us as beginners but directly he showing something else 99.9999999% from that the thing what we need is 0.0000000001% so its very confusing he did same for duck typing also
@@anindian4601 No, Actually his explanation is cool. He is explaining in the beginner point of view
He is probably the best instructor to learn from! He teaches with so much clarity! Hats off!
Since last Monday I have started to watching your videos . Now I am in #60.. , ultimately your teaching skill is too good . I have some basic core java knowledge, that's why I can catch up quickly and without you I couldn't go in depth in python.. thank you very much for sharing those materials . Appreciate your hard work.
00:03 Operator overloading allows usage of operators with user-defined types like strings and classes.
02:02 Python uses methods to carry out operations like addition.
03:48 Operator overloading allows defining how operators work with user-defined classes.
05:36 Operator overloading allows us to define custom behavior for operators
07:28 Python allows operator overloading for custom classes
09:08 Operator overloading allows custom comparison of objects.
10:59 Operator overloading and polymorphism in Python
12:43 Operator overloading in Python allows us to customize the behavior of operators.
I was here to learn what operator overloading is. At the time of the end of the video, I learned about the structure and how the things behind the scene gonna work. Take a Bow Navin Sir.
Excellent explanation I ever heard. You are amazing. Your teaching skills are at a peak. Impressed.
You are a talented teacher! Happy that i've found you. Keep up the videos coming
Wow I never knew about these double underscore function. Glad to learn new things from your channel. Thank you sir.
Clearly explained the concept of method overloading in Python. Thank you!
Thanks, sir! from now on, you opened my eyes on what python can do. All confusions are gone from my head. I really understand python now.
One of the Good lecture, Students need teachers like you
Thanks superhuman for this great explanation, right now I can feel what is happening behind the scene
Thanks for providing quality content for free it's better than most of the paid courses out there .
You are just amazing.(:
Awesome sir...
Also being an educator, I can imagine how much effort you are putting in these videos.👍
How cruel are these language developer, can they not make this little easy....
@@harshavardhandsh5190 Python is easy thou
I can also see the effort you put in these videos, Navin sir. And today is my birthday Navin sir!
Great video, got lots to learn thank you so much 😊
Are concepts really so easy,or it's his teaching that's making them??
The way you explained the connection and flow behind the code was exceptionally well, your video increasing my knowledge of python exponentially.
thank you for your amazing lessons sir.
def __str__(self):
return " ".join(map(str, [self.mark1, self.mark2]))
I ain't able to figure out the example of operator overloading :(
Really I never understand this topic... But nowww i really know the meaning of operator overloading! Hats off to you sir🙌
Thnx very much I'm having exam tomorrow very nicely explained
This video was very informative. Feels good to understand how magic methods works. Thanks Navin Sir!
Sir u literally thrown away my difficulty of understanding magical methods 🔥
After waching video in sequence this is the firts video i enjoy in diff way. ;)
Best Tutorial series in youtube ..........Love Sir
this is the best channel on youtube to learn coding
Excellent Sir .. now I feel like a coder 😁
In the code of addition
def __add__(self, other):
m1 = self.m1 + self.m2
m2 = other.m1 + other.m2
s3 = Student (m1, m2)
This is correct
Finally in this tutorial somethings I couldn't understand started making sense, thanks to this man!
sir, can you make videos on REST API using python
I think below method is much more easy
class A:
def __init__(self,a):
self.a = a
def __add__(self,other):
return self.a + other.a
x = A(1)
y = A(2)
print(x+y)
o/p = 3
can you also help for subtraction
@@vibhashikhanna1864
class A:
def __init__(self,a):
self.a = a
def __sub__(self,other):
return self.a - other.a
x = A(3)
y = A(2)
print(x-y)
o/p = 1
@@Shubham-fk4is thnx buddy
class A:
def __init__(self,a):
self.a = a
def __add__(self,other):
return self.a + other.a
def _sub_(self,other):
return self.a-other.a
x = A(int(input("enter the number ")))
y = A(int(input("enter the second number ")))
print(x+y)
x = A(int(input("enter the number ")))
y = A(int(input("enter the second number ")))
print(x-y)
can youn help me with this...i wanna do it with operator overloading
@@vibhashikhanna1864
This program works well but you made a mistake with underscores.
so use double underscores instead of single i.e. __sub__
No doubt, explanation is quite perspicuous.
I am just curious how print(a+b+c) performed behind the scene because __add__ can add only two number
Any Explanation/suggestion will be highly appreciated
it's too late but if you're still curious then variable length argument concept would be used in that case,you would accept the b,c in a list in the formal args and then perform the addition by using required mean like iteration etc
Thanks Naveen, every time I go through your video, I thank you and your team.
this is not so easy to understand, you did it also very quickly.. anyway thank u very much ..
That's who things should be taught, loved the way you created a some background
Sir what next after this basic ?? Blockchain or advance python??
thank you for your excellent class...I felt very very happy..thank you sir
Sir Your videos are like preparing tastiest Briyani and giving it as service for free 😃🥰🥰
This man is a genius 🙌
Awesome lecture.
Thank you sir 🙏
Thank you for uploading these awesome lectures, Sir. There's a typo in this video though. "Syntactic Sugar" instead of "Synthetic Sugar".
Great explaination!
Its crystal clear for me now.
At 1:24 it's supposed to be "Syntactic Sugar"
Actually, the __div__(self,other) magic method for operator (/) is only for Python 2.x. For Python 3.x -- as I have found -- the (/) operator call the __truediv__(self,other) magic method.
Your classes are amazing...
sir please bring up a series of python for intermediate where we can understand advance concepts of python.
what if we get many teacher like him
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In no time INDIA will be a super developed country
Best Way one can teach ! Appreciative content.
Hi sir will you teach advance python like networking with python etc...
Sir ek aur video bana do operator overloading k upar... Apke sare tutorials samj gye, ye nhi smja
Thanks a lot sir you cleared my doubts
Sir please make step by step videos on interview preperation....
9:08 LEGEND!!!!!
Print(S1.AMAZING,S1.AWSOME)
hat's off guruji, im glad that people are aware about the marks comparison way, i aint a fan that way either. but as you said on youtube it might have reached a mass crowd...
Sir you are passing double values through s1 & s2 but it added only first values of both s1 & s2 ...my question is where second values has gone
I was looking in the comment section to see if anyone has asked this particular question, I have no idea what other people understood !
your explanation is excellent
Excellent explanation
great sir again the imformation which will add some values in my life😍
This is one hell of a great video! Thank you
A small doubt: for math operation like +, - , * , we can understand which method will be called. How to know which way of calling maps to which builtin method?
Eg. - How to know by calling print(a) will call __str__() ?
google or by reading document. You can search - print() function's magic/inbuilt method. like that
What if we want to add 3 values by method overloading...? 🤔
Like... s4=s1+s2+s3
You're an awesome teacher!
*excellent teaching sir. i think I would get good marks in my 11th standard
These tutorials are great, but it would be a lot better to watch if the code in the background was a bigger font and/or more zoomed on, couse althought the content is awesome, you can hardly read the code it self.cheers
Hi Naveen,
what are the programs used in Product development Programs
Kindly make video
If we have two class,
Class BookX:
def __init__(self, pages) :
self. pages=pages
def __add__(self, other) :
return self. pages+other.pages
Class BookY:
def __init__(self, pages) :
self. pages=pages
x=BookX(100)
y=BookY(150)
print("Total pages =", x+y)
In this code why we are giving the add method in first class and why not in second class??
you can have in second class too you just need to change expression to y+x cuz first parameter has to be object of class BookY
This is good and just.
Thank you.
why it is giving only one output in case of sum... i mean 118 and 134 should be there.... also if i want to get both sums what i has to write ?
while printing he has only written "s3.m1"..print "s3.m2" as well to get 134
9:10 .....Golden Line 👏👏👏👌👌
So amazing sir.. Thank you for the awesome tutorial.
Ur python videos are awsmm.. watched all ur videos on python . waiting for next videos on python..pls keep making videos on python..thankuu sir
Can we overload the '__add__' method multiple times inside the same class? (Each method having its own different code)
Just Enjoyed It Thanks
inside int class in add function self is argument which means add method is instance method.why we are able to call "int.add " it should be object.add()
I was frustrated since there’s no custom sort method for heapq. Hell i was Huma switch to c++ , but you explained it greatly
@Telusko, Sir, How to know the magic method used for an operator from pycharm itself?
Sir, by your experience and knowledge you are saying that for "+" __add__ is used, for "print()" __str__ is being used, how do we know for a random operator/method, what magic method is being used in the background...so that we may overload it to our usage/preference??
Yes, I want to know the same.
press control and click on the operator you want to know to get MAGIC method
Double click "shift" and search magic method
Excellent video...finally understood the concept
How can we know which method is called in the behind if we use a specific operator?
it's actually "syntactic sugar" at 1:31
class PyCharm:
def execute(self):
print("Executing")
print("Compiling")
class MyEditor:
def execute(self):
print("Spell Check")
print("Convention Check")
print("Executing")
print("Compiling")
class Laptop:
def code(self,ide):
ide.execute()
ide=PyCharm()
lap1=Laptop()
lap1.code(ide)
There is no div magic method, please can you tell me for division how it works
Please make one more video on class and __init__
you are just awesome
nice video sir
When you print an object (and everything in Python is an object), it calls automatically the __str__ method, so we don't need to call it. 'print(s1)' would be enough to do the trick.
class student:
def __add__ (self,n1,n2):
s=0
s=n1+n2
return s
s1=student (1,2)
print (s1)
#will it show error dont say #indentation error becoz i had types
Please check, It would be syntactic sugar not a synthetic sugar..
also please explain the difference between data type and class.
is int, list , str a class or are they data type?
For defining add or any operator in class can i use any other keyword like, for add __a__. Or for greater than __grt__??
yes u can
Just amazing 😊👍
Really u r awesome sir
i have a question. Can you please tell me why you have written s3=Student(m1,m2) inside the __add__(self,other) method. I am not able to understand this. Please tell this.
By adding s3 = Student(m1,m2) under the __add__ function, this will automatically 'create' another 'student' with the resultant marks.
I have a doubt about these statements will you please explain..
X+y is translated into x.__add__(y)
If x has not implemented __add__ and x,y are of different types then y.__radd__(x) is called. There are equivalent "r" methods for all magic methods just mentioned.
Hi Navin, I was trying to overload the "__truediv__" operator and could see that its having an issue. Below is my code. Please do let me know, if i am doing anything wrong. BTW, i am using the Python 3 version :-
class Stduent:
def __init__(self,m1,m2):
self.m1=m1
self.m2=m2
def __truediv__(self,other):
m1=self.m1/other.m1
m2=self.m2/other.m2
s3 = Student(m1,m2)
return s3
S1=Student(20,40)
S2=Student(10,20)
s3=S1/S2
print(s3.m1)
TypeError: unsupported operand type(s) for /: 'Student' and 'Student'
As useal greater explanation sir💯💯
The main doubt is which value goes in which attribute s
You are just a flame sir G