Python Basic Learning Notes (iv) statement

Resources:

1. Basic Python Tutorial

2. http://www.runoob.com/python/python-chinese-encoding.html

3. http://www.liaoxuefeng.com/wiki/001374738125095c955c1e6d8bb493182103fac9270762a000

　　? conditional Statements

The usage examples of conditional statements are as follows:

#!/usr/bin/python#-*-coding:utf-8-*-#Example 2:elif usageNum= 5ifNum >= 0 andNum <= 1:#determine if the value is between 0~1    Print 'between 0~1'        elifnum = = 2:    Print '2'elifnum = = 3:    Print '3'elifnum = = 4:Print '4'Else:    Print 'Invalid Value'     #output when conditions are not true

　　? While Loop statement

the use instance of the while loop statement is as follows:

 while 1:          #  loop condition 1 must be set to    print i         #  output 1~10    i + = 1    if i >:     #  when I is greater than 10 o'clock jump out of loop break        

? For Loop statement

 #  !/usr/bin/python  #  -*-coding:utf-8-*- fruits  = [ Span style= "color: #800000;" > '  banana   ' ,  apple   ' ,   

Example 2:

#!/usr/bin/python#-*-coding:utf-8-*- forLetterinch 'Python':#First Instance   ifLetter = ='h':      Continue   Print 'Current Letter:', Lettervar= 10#a second instance whilevar >0:var= Var-1ifvar = = 5:      Continue   Print 'Current variable Value:'Var

? Pass Statement

The pass statement is an empty statement that guarantees the integrity of the program structure.

#!/usr/bin/python#-*-coding:utf-8-*-#output Python for each letter forLetterinch 'Python':   ifLetter = ='h':      Pass      Print 'This is a pass block .'   Print 'Current Letter:', letter

Python Basic Learning Notes (iv) statement