Python: Comments

What is a comment?

Logout: Do not participate in execution

Explanation Code: Someone is used to explaining the code on the edge, suggesting that it be put on top.

1 ) A single line comment begins with #

# Requirement 12: Keyboard input positive integer n, to find the sum of N and its reverse order and output for example: 123 reverse order 321 output 123+321=?

Single-line uncomment: Ctrl +/

2 multiple lines of comment, which tells you the function of the module, has better readability, can use multiple # numbers, and "and" ":

Such as:

"""

# Requirement 12: Keyboard input positive integer n, to find the sum of N and its reverse order and output for example: 123 reverse order 321 output 123+321=?

num=input (" Please enter a number:")

New_num= ""

I=len (num)

Whilei>=1:

NEW_NUM+=NUM[I-1]

I-=1

Print ("%d+%d=%d"% (int (num), int (new_num), int (num) +int (new_num)))

"""

Multi-line logout, select multiple lines of code and CTRL +/to cancel multiple lines

3 ) Other

#-*-coding:utf-8-*-tells the type of code used

#!/usr/bin/python3 code written under Linux, Windows does not have to write

#! /d:/python/python.exe write code in Windows, can not write

Python: Comments