Table of contents


Conditional statement

Expressions that used in if, elif statements must be estimated through True or False.

  1. Use simple if statement

     if <expression>:
     # statements

    For example:

     age = 10
 if age > 6:
     print("Junior")

  2. Use if..else statement

     if <expression>:
     # statements
 else:
     # other statements

  3. Use if .. elif .. else statement

     if <expression>:
     # statements
 elif <expression>:
     # statements
 elif <expression>:
     # statements
 else:
     # statements

Python does not have switch statement.


Loop statement

  1. while loop

     while <expression>:
     # statements

    For example:

     x = 0
 while x < 10:
     x = x + 1

 print('Current value: ' + str(x))

  2. For loop

     for <iter> in <somethings>:
     # statements

    For example:

     for letter in 'Hello, world':
     print(letter)


Wrapping up

  • Understanding about how to use the common statements in Python.

  • Use pass statement for empty function, class, loop or if .. else statements to avoid the error notifications from interpreter.