python docstring是什么

>>> def sayhi():

 """

用该函数打印Hi

"""

 print("Hi")

>>> sayhi()

Hi

>>> sayhi.__doc__

‘

  This function prints Hi

’

def printMax(x, y):

    '''Prints the maximum of two numbers.

    The two values must be integers.'''

    x = int(x) # convert to integers, if possible

    y = int(y)

    if x > y:

         print (x, 'is maximum')

    else:

         print (y, 'is maximum')

printMax(3, 5)

print (printMax.__doc__)

import test

5 is maximum

Prints the maximum of two numbers.

    The two values must be integers.

help(test)

Help on module test:

NAME

    test - Created on Sat Jun  2 19:05:08 2018

DESCRIPTION

    @author: linzhiwei02

FUNCTIONS

    printMax(x, y)

        Prints the maximum of two numbers.

        The two values must be integers.

FILE

    /Users/linzhiwei02/Desktop/test.py