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Decision making structures require that the programmer specify one or more conditions to be evaluated or tested by the program, along with a statement or statements to be executed if the condition is determined to be true, and optionally, other statements to be executed if the condition is determined to be false.
Following is the general from of a typical decision making structure found in most of the programming languages :
Python programminglanguage assumes any non-zero and non null values as true and if it is eitherzero or null then it is assumed as false value.
Python programming language provides follo-wing types of decision makingstatements.
| Statement | Description |
| if statements | An if statement consists of a boolean expression followed by one or more statements |
| if…else statements | An if statement can be followed by an optional else statement,which executes when the boolean expression is false |
| nested if statement | You can use one if or else if statement inside another if or else if statement(s) |