Detailed introduction to if statement in python

This article brings you a detailed introduction to the if statement in python. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

input() gets the string. bool: Only empty values ​​are False, any characters are True

elif

If it is a multi-condition branch, different conditions will execute differently, use The format of elif
is as follows:

if 条件1
	执行代码1
elif 条件2
	执行代码2
elif 条件3
	执行代码3
.......
else
	以上条件都不满足执行代码

can be regarded as a code block from if to elif to else and the indented code below it.

if nested

• elif, multiple conditions, each condition is level
• The nesting of if is progressive . When meets the condition , add another branch
  Syntax format:

if 条件1：
	if 条件2：
		执行
	else 不满足条件2：
		执行
else 不满足条件1：
	执行

pycharm Tips: Select multiple lines and press Tab to add indentation in front of each line, and then press Shift Tab to cancel the indentation

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