Python - 066 : Read from a file in python

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  • เผยแพร่เมื่อ 4 ต.ค. 2024
  • The read() method:
    This function returns the bytes read as a string. If no n is specified, it then reads the entire file.
    Example:
    f = open("myfiles.txt", "r")
    #('r’) opens the text files for reading only
    print(f.read())
    #The "f.read" prints out the data in the text file in the shell when run.
    The readline() method:
    This function reads a line from a file and returns it as a string. It reads at most n bytes for the specified n. But even if n is greater than the length of the line, it does not read more than one line.
    f = open("myfiles.txt", "r")
    print(f.readline())
    The readlines() method:
    This function reads all of the lines and returns them as string elements in a list, one for each line.
    You can read the first two lines by calling readline() twice, reading the first two lines of the file:
    f = open("myfiles.txt", "r")
    print(f.readline())
    print(f.readline())

ความคิดเห็น • 1

  • @Siri0308
    @Siri0308 หลายเดือนก่อน

    Thank you sir