Course Seven - Decision making in Python application Programming

Decision making in Python application Programming

By ienex

Decision-making in programming involves evaluating conditions during program execution and taking appropriate actions based on those conditions. In Python, decision-making is typically done using logical expressions that evaluate to either True or False. The program then executes specific code depending on the result.

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How Python Evaluates Conditions

In Python:

• Any non-zero value is considered True.

• A zero value or None is considered False.

This allows Python to handle a wide range of decision-making scenarios efficiently.

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Decision-Making Structures in Python

Python provides several control structures for decision-making:

Statement	Description
if	Evaluates a logical expression and executes a block of code if the expression is True.
if ... else	Provides alternative actions when the if expression is False.
if ... elif ... else	Allows multiple conditions to be checked sequentially.
Nested if	An if statement can be placed inside another if or elif block for complex conditions.

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Single-Line if Statement

If the action to be executed consists of a single line, Python allows writing the if statement on the same line:

# Python example
var = 100

if var == 100: print("Value of expression is 100")

print("Good bye!")

Output:

Value of expression is 100
Good bye!

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This demonstrates the simplicity and flexibility of Python’s decision-making structures.