Conditional statements in Python allow you to execute code based on certain conditions. They are fundamental for controlling the flow of a program. Here's a comprehensive overview of how to use conditional statements in Python:
1. if
Statement
The if
statement is used to test a condition. If the condition evaluates to True
, the code block under the if
statement is executed.
2. if
-else
Statement
The else
statement follows an if
statement and runs when the if
condition is False
.
3. if
-elif
-else
Statement
The elif
(short for "else if") statement checks another condition if the previous if
condition was False
4. Nested if
Statements
You can nest if
statements within other if
statements to create complex conditions.
5. Logical Operators
You can use logical operators (and
, or
, not
) to combine multiple conditions.
Using and
:
not
:6. Conditional Expressions (Ternary Operator)
Python supports conditional expressions (also known as ternary operators) for short conditional assignments.
Summary
if
statement: Executes a block of code if the condition is true.else
statement: Executes a block of code if theif
condition is false.elif
statement: Checks multiple conditions.- Logical operators:
and
,or
,not
to combine conditions. - Nested
if
statements: Create complex conditions. - Ternary operator: Short conditional assignments.
By mastering conditional statements, you'll be able to control the flow of your programs effectively and handle various logical scenarios.
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