In this tutorial we shall learn about Input and Decision Making statements.To get the data from the user we need to use input statements.Input statement in python is variable_name = input(“Text_to_be_displayed”);.The input statement is a predefined function which has String has parameter to display the message to the user.Now the value entered by the user will be stored in the variable.
Let us write a simple program to demonstrate the input statement.In this program we request the user to enter his/her age and display the same age to the user.

age = input("Please enter your Age:");
print("Your entered your age as " + age); 

Output:

Decision Making Statement: In all programming language Decision Making Statements are nothing but if statements.We all know that there are 4 type of if statements.But the syntax of if statements may vary depending upon the language. Python too have different syntax for if statements.We shall learn.
Simple if Statement:The syntax of simple if statement is

if (condition) :
        <true statements>
        <true statements>
              .
              .
              .
        <true statements>

if…else Statement: The syntax of if else is

if (condition) :
        <true statements>
        <true statements>
              .
              .
else :
       <false statements>
       <false statements>
              .
              .

Nested if…else Statements: The syntax of nested if-else statements is

if (condition 1):
      if(condition 2) :
              <true statements>
      else :
              <false statements>
else :
       if (condition 3) :
             <true statements>
       else :
             <false Statements>

else…if: With comparison to other languages in python else if have different syntax

if (condition 1 ) :
          <true statements>
elif (condition 2) :
          <true statements>
elif (condition 3) :
          <true statements>
.
.
.
elif(condition n)
         <true statements>

These are the decision making statements present in python and their respective syntax.One more thing Python doesn’t support Switch statements