Three python flow control

Three flow control statements:

1. The order of execution

　　From top to bottom in the order execution

2. Select the branch (the else IF)

　　IF expression:
　　　　code execution

　　elif expression:
　　　　code execution

　　elif expression:　　
　　　　code execution
....
　　The else:
　　　　code execution

Description: only need to meet one condition, which condition the following code program is executed, and then exit branch

 

3. loop
　　for i in xxxx:
　　　　Print (i)

　　while expressions
　　　　print