Detailed description of the variable basic data type if, while statement in Python

This article details the variable basic data type if, while statement in Python

Variable name: can only consist of numbers, letters, underscores and cannot start with a number; variable names cannot be keywords inside python

Basic data type: Number, String, Boolean (True/false)

"If condition statement"

If condition:

code block

Else

code block

If condition one:

code block

Elif Condition Two:

code block

Elif Condition Three:

code block

Else

code block

"Simple User logon program"

Name = Input ("Username:") pwd = input ("Password:") if name = = "ZJW" and pwd = = "123"    print (' yes ') Else:    print (' No ')

"While Loop statement"

While condition:

code block

Instance

"All positive integers within output 10"

Import time n = 1flag = Truewhile flag:     print (n)     if n ==10:          flag = = False     n=n+1     time.sleep (1) print ("E nd ")

"Break" is used to jump out of the current loop, and the code below the break no longer executes

n =  1while True:     print (n)     if n ==10:          breakn=n+1

"Continue" is used to jump out of this loop and continue the next cycle

While True:     print ("123")          continue     print ("456")