Statements - Execution Units

Python Tutorials - Herong's Tutorial Examples

∟Statements - Execution Units

This chapter provides introductions and tutorial examples about statements. Topics include introductions to expression, assignment, 'del', 'import', 'if', 'while', 'for', 'try', 'with', and 'match' statements.

What Is Statement

"pass" Statement - Do Nothing Statement

Expression Statement - One Expression Only

"=" Statement - Assignment Statement

"del" Statement - Delete Statement

"import" Statement to Load Modules

"if" Statement for Conditional Execution

"while" Statement for Execution Loop

"for" Statement for Iterative Execution

"try" Statement to Catch Execution

"with" Statement for Context Manager

"match" Statement for Pattern Match

Takeaways:

A statement is a smallest unit of code that can be sent to the Python system to execute.
A "null" statement does nothing and is commonly used used as a placeholder to form an empty sub-statement block.
An expression statement evaluates a single expression.
A "=", or assignment, statement assigns objects to reference targets.
A "del", or delete, statement deletes the definitions of given targets and their associated object references.
An "if" statement selects a block of sub-statements to execute based on given conditions.
A "while" statement executes a block of sub-statements repeatedly while the given condition is valid.
A "for" statement iterates over the elements of a sequence and executes a block of sub-statements for each iteration.
A "try" statement allows you to manage exceptions raised from a block of sub-statements.
A "with" statement wraps a standard "try" statement with a context manager object.
A "match" statement selects a block of sub-statements to execute based on pattern match algorithms.