Introduction to Python basic process control (code example)

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Conditional statement

if 条件:
	内容
else:
	内容

The indentation must be the same or an error will be reported

#!/usr/bin/evn python
#-*- coding:utf-8 -*-
if 1 == 1:
	print("OK")
else
	print("NO")

One = sign is assignment
Two == is comparison
!= means no Equal to

Multiple conditions

#!/usr/bin/evn python
#-*- conding:utf-8 -*-

name = input("UserName:")

if name == "12345":
	print("恭喜你答对了")
elif name == "ABCDE":
	print("恭喜你对了是ABCDE")
elif name == "qazwsx":
	print("恭喜你是qazwsx")
else:
	print("你打错了，请重新输入")

and All conditions must be met

#!/usr/bin/env python
#-*- coding:utf-8 -*-

name = input("UserName:")
pw = input("password:")
if name == "abc" and pw == "123":
	print("恭喜你输入正确")
else:
	print("输入错误请重新输入")

or Only one of the conditions must be met

#!/usr/bin/env python
#-*- coding:utf-8 -*-

name = input("UserName:")

if name == "abc" or name == "123":
	print("恭喜你输入正确")
else:
	print("请输入正确字符")

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