11.1 Introduction to Decision Making
Introduction to Decision Making is an important part of Python conditional programming. It helps a program examine information and decide which instructions should run. Beginners should read the condition carefully, notice the colon, and keep the related code indented. This topic is commonly used in forms, menus, games, validation, calculations, and everyday decision-making programs.
Example
age = 20
if age >= 18:
print("Adult")
Output
Adult
Output explanation: Python checks the condition or pattern from top to bottom. The matching or true branch runs, producing the output shown above. Lines belonging to the selected block are indented, while blocks whose conditions are false are skipped.
11.2 Boolean Expressions
Boolean Expressions is an important part of Python conditional programming. It helps a program examine information and decide which instructions should run. Beginners should read the condition carefully, notice the colon, and keep the related code indented. This topic is commonly used in forms, menus, games, validation, calculations, and everyday decision-making programs.
Example
age = 20
if age >= 18:
print("Adult")
Output
Adult
Output explanation: Python checks the condition or pattern from top to bottom. The matching or true branch runs, producing the output shown above. Lines belonging to the selected block are indented, while blocks whose conditions are false are skipped.
11.3 The if Statement
The if Statement is an important part of Python conditional programming. It helps a program examine information and decide which instructions should run. Beginners should read the condition carefully, notice the colon, and keep the related code indented. This topic is commonly used in forms, menus, games, validation, calculations, and everyday decision-making programs.
Example
age = 20
if age >= 18:
print("Adult")
Output
Adult
Output explanation: Python checks the condition or pattern from top to bottom. The matching or true branch runs, producing the output shown above. Lines belonging to the selected block are indented, while blocks whose conditions are false are skipped.
11.4 The else Statement
The else Statement is an important part of Python conditional programming. It helps a program examine information and decide which instructions should run. Beginners should read the condition carefully, notice the colon, and keep the related code indented. This topic is commonly used in forms, menus, games, validation, calculations, and everyday decision-making programs.
Example
age = 15
if age >= 18:
print("Adult")
else:
print("Minor")
Output
Minor
Output explanation: Python checks the condition or pattern from top to bottom. The matching or true branch runs, producing the output shown above. Lines belonging to the selected block are indented, while blocks whose conditions are false are skipped.
11.5 The elif Statement
The elif Statement is an important part of Python conditional programming. It helps a program examine information and decide which instructions should run. Beginners should read the condition carefully, notice the colon, and keep the related code indented. This topic is commonly used in forms, menus, games, validation, calculations, and everyday decision-making programs.
Example
score = 75
if score >= 90:
print("A")
elif score >= 70:
print("B")
else:
print("C")
Output
B
Output explanation: Python checks the condition or pattern from top to bottom. The matching or true branch runs, producing the output shown above. Lines belonging to the selected block are indented, while blocks whose conditions are false are skipped.
11.6 Multiple Conditions
Multiple Conditions is an important part of Python conditional programming. It helps a program examine information and decide which instructions should run. Beginners should read the condition carefully, notice the colon, and keep the related code indented. This topic is commonly used in forms, menus, games, validation, calculations, and everyday decision-making programs.
Example
age = 20
if age >= 18:
print("Adult")
Output
Adult
Output explanation: Python checks the condition or pattern from top to bottom. The matching or true branch runs, producing the output shown above. Lines belonging to the selected block are indented, while blocks whose conditions are false are skipped.
11.7 Nested Conditions
Nested Conditions is an important part of Python conditional programming. It helps a program examine information and decide which instructions should run. Beginners should read the condition carefully, notice the colon, and keep the related code indented. This topic is commonly used in forms, menus, games, validation, calculations, and everyday decision-making programs.
Example
age = 20
if age >= 18:
print("Adult")
Output
Adult
Output explanation: Python checks the condition or pattern from top to bottom. The matching or true branch runs, producing the output shown above. Lines belonging to the selected block are indented, while blocks whose conditions are false are skipped.
11.8 Comparison Operators
Comparison Operators is an important part of Python conditional programming. It helps a program examine information and decide which instructions should run. Beginners should read the condition carefully, notice the colon, and keep the related code indented. This topic is commonly used in forms, menus, games, validation, calculations, and everyday decision-making programs.
Example
age = 20
if age >= 18:
print("Adult")
Output
Adult
Output explanation: Python checks the condition or pattern from top to bottom. The matching or true branch runs, producing the output shown above. Lines belonging to the selected block are indented, while blocks whose conditions are false are skipped.
11.9 Logical Operators
Logical Operators is an important part of Python conditional programming. It helps a program examine information and decide which instructions should run. Beginners should read the condition carefully, notice the colon, and keep the related code indented. This topic is commonly used in forms, menus, games, validation, calculations, and everyday decision-making programs.
Example
age = 20
if age >= 18:
print("Adult")
Output
Adult
Output explanation: Python checks the condition or pattern from top to bottom. The matching or true branch runs, producing the output shown above. Lines belonging to the selected block are indented, while blocks whose conditions are false are skipped.
11.10 Membership Conditions
Membership Conditions is an important part of Python conditional programming. It helps a program examine information and decide which instructions should run. Beginners should read the condition carefully, notice the colon, and keep the related code indented. This topic is commonly used in forms, menus, games, validation, calculations, and everyday decision-making programs.
Example
age = 20
if age >= 18:
print("Adult")
Output
Adult
Output explanation: Python checks the condition or pattern from top to bottom. The matching or true branch runs, producing the output shown above. Lines belonging to the selected block are indented, while blocks whose conditions are false are skipped.
11.11 Identity Conditions
Identity Conditions is an important part of Python conditional programming. It helps a program examine information and decide which instructions should run. Beginners should read the condition carefully, notice the colon, and keep the related code indented. This topic is commonly used in forms, menus, games, validation, calculations, and everyday decision-making programs.
Example
age = 20
if age >= 18:
print("Adult")
Output
Adult
Output explanation: Python checks the condition or pattern from top to bottom. The matching or true branch runs, producing the output shown above. Lines belonging to the selected block are indented, while blocks whose conditions are false are skipped.
11.12 Truthy Values
Truthy Values is an important part of Python conditional programming. It helps a program examine information and decide which instructions should run. Beginners should read the condition carefully, notice the colon, and keep the related code indented. This topic is commonly used in forms, menus, games, validation, calculations, and everyday decision-making programs.
Example
age = 20
if age >= 18:
print("Adult")
Output
Adult
Output explanation: Python checks the condition or pattern from top to bottom. The matching or true branch runs, producing the output shown above. Lines belonging to the selected block are indented, while blocks whose conditions are false are skipped.
11.13 Falsy Values
Falsy Values is an important part of Python conditional programming. It helps a program examine information and decide which instructions should run. Beginners should read the condition carefully, notice the colon, and keep the related code indented. This topic is commonly used in forms, menus, games, validation, calculations, and everyday decision-making programs.
Example
age = 20
if age >= 18:
print("Adult")
Output
Adult
Output explanation: Python checks the condition or pattern from top to bottom. The matching or true branch runs, producing the output shown above. Lines belonging to the selected block are indented, while blocks whose conditions are false are skipped.
11.14 Short-Form if Statements
Short-Form if Statements is an important part of Python conditional programming. It helps a program examine information and decide which instructions should run. Beginners should read the condition carefully, notice the colon, and keep the related code indented. This topic is commonly used in forms, menus, games, validation, calculations, and everyday decision-making programs.
Example
age = 20
if age >= 18:
print("Adult")
Output
Adult
Output explanation: Python checks the condition or pattern from top to bottom. The matching or true branch runs, producing the output shown above. Lines belonging to the selected block are indented, while blocks whose conditions are false are skipped.
11.15 Conditional Expressions
Conditional Expressions is an important part of Python conditional programming. It helps a program examine information and decide which instructions should run. Beginners should read the condition carefully, notice the colon, and keep the related code indented. This topic is commonly used in forms, menus, games, validation, calculations, and everyday decision-making programs.
Example
age = 20
if age >= 18:
print("Adult")
Output
Adult
Output explanation: Python checks the condition or pattern from top to bottom. The matching or true branch runs, producing the output shown above. Lines belonging to the selected block are indented, while blocks whose conditions are false are skipped.
11.16 Ternary Operators
Ternary Operators is an important part of Python conditional programming. It helps a program examine information and decide which instructions should run. Beginners should read the condition carefully, notice the colon, and keep the related code indented. This topic is commonly used in forms, menus, games, validation, calculations, and everyday decision-making programs.
Example
age = 20
if age >= 18:
print("Adult")
Output
Adult
Output explanation: Python checks the condition or pattern from top to bottom. The matching or true branch runs, producing the output shown above. Lines belonging to the selected block are indented, while blocks whose conditions are false are skipped.
11.17 The pass Statement
The pass Statement is an important part of Python conditional programming. It helps a program examine information and decide which instructions should run. Beginners should read the condition carefully, notice the colon, and keep the related code indented. This topic is commonly used in forms, menus, games, validation, calculations, and everyday decision-making programs.
Example
age = 20
if age >= 18:
print("Adult")
Output
Adult
Output explanation: Python checks the condition or pattern from top to bottom. The matching or true branch runs, producing the output shown above. Lines belonging to the selected block are indented, while blocks whose conditions are false are skipped.
11.18 Match-Case Statements
Match-Case Statements is an important part of Python conditional programming. It helps a program examine information and decide which instructions should run. Beginners should read the condition carefully, notice the colon, and keep the related code indented. This topic is commonly used in forms, menus, games, validation, calculations, and everyday decision-making programs.
Example
day = 2
match day:
case 1:
print("Monday")
case 2:
print("Tuesday")
case _:
print("Unknown")
Output
Tuesday
Output explanation: Python checks the condition or pattern from top to bottom. The matching or true branch runs, producing the output shown above. Lines belonging to the selected block are indented, while blocks whose conditions are false are skipped.
11.19 Match Patterns
Match Patterns is an important part of Python conditional programming. It helps a program examine information and decide which instructions should run. Beginners should read the condition carefully, notice the colon, and keep the related code indented. This topic is commonly used in forms, menus, games, validation, calculations, and everyday decision-making programs.
Example
age = 20
if age >= 18:
print("Adult")
Output
Adult
Output explanation: Python checks the condition or pattern from top to bottom. The matching or true branch runs, producing the output shown above. Lines belonging to the selected block are indented, while blocks whose conditions are false are skipped.
11.20 OR Patterns
OR Patterns is an important part of Python conditional programming. It helps a program examine information and decide which instructions should run. Beginners should read the condition carefully, notice the colon, and keep the related code indented. This topic is commonly used in forms, menus, games, validation, calculations, and everyday decision-making programs.
Example
age = 20
if age >= 18:
print("Adult")
Output
Adult
Output explanation: Python checks the condition or pattern from top to bottom. The matching or true branch runs, producing the output shown above. Lines belonging to the selected block are indented, while blocks whose conditions are false are skipped.
11.21 Capture Patterns
Capture Patterns is an important part of Python conditional programming. It helps a program examine information and decide which instructions should run. Beginners should read the condition carefully, notice the colon, and keep the related code indented. This topic is commonly used in forms, menus, games, validation, calculations, and everyday decision-making programs.
Example
age = 20
if age >= 18:
print("Adult")
Output
Adult
Output explanation: Python checks the condition or pattern from top to bottom. The matching or true branch runs, producing the output shown above. Lines belonging to the selected block are indented, while blocks whose conditions are false are skipped.
11.22 Wildcard Patterns
Wildcard Patterns is an important part of Python conditional programming. It helps a program examine information and decide which instructions should run. Beginners should read the condition carefully, notice the colon, and keep the related code indented. This topic is commonly used in forms, menus, games, validation, calculations, and everyday decision-making programs.
Example
age = 20
if age >= 18:
print("Adult")
Output
Adult
Output explanation: Python checks the condition or pattern from top to bottom. The matching or true branch runs, producing the output shown above. Lines belonging to the selected block are indented, while blocks whose conditions are false are skipped.
11.23 Guard Conditions
Guard Conditions is an important part of Python conditional programming. It helps a program examine information and decide which instructions should run. Beginners should read the condition carefully, notice the colon, and keep the related code indented. This topic is commonly used in forms, menus, games, validation, calculations, and everyday decision-making programs.
Example
age = 20
if age >= 18:
print("Adult")
Output
Adult
Output explanation: Python checks the condition or pattern from top to bottom. The matching or true branch runs, producing the output shown above. Lines belonging to the selected block are indented, while blocks whose conditions are false are skipped.
11.24 Nested Match Patterns
Nested Match Patterns is an important part of Python conditional programming. It helps a program examine information and decide which instructions should run. Beginners should read the condition carefully, notice the colon, and keep the related code indented. This topic is commonly used in forms, menus, games, validation, calculations, and everyday decision-making programs.
Example
age = 20
if age >= 18:
print("Adult")
Output
Adult
Output explanation: Python checks the condition or pattern from top to bottom. The matching or true branch runs, producing the output shown above. Lines belonging to the selected block are indented, while blocks whose conditions are false are skipped.
11.25 Input Validation
Input Validation is an important part of Python conditional programming. It helps a program examine information and decide which instructions should run. Beginners should read the condition carefully, notice the colon, and keep the related code indented. This topic is commonly used in forms, menus, games, validation, calculations, and everyday decision-making programs.
Example
age = 20
if age >= 18:
print("Adult")
Output
Adult
Output explanation: Python checks the condition or pattern from top to bottom. The matching or true branch runs, producing the output shown above. Lines belonging to the selected block are indented, while blocks whose conditions are false are skipped.
11.26 Real-World Decision Systems
Real-World Decision Systems is an important part of Python conditional programming. It helps a program examine information and decide which instructions should run. Beginners should read the condition carefully, notice the colon, and keep the related code indented. This topic is commonly used in forms, menus, games, validation, calculations, and everyday decision-making programs.
Example
age = 20
if age >= 18:
print("Adult")
Output
Adult
Output explanation: Python checks the condition or pattern from top to bottom. The matching or true branch runs, producing the output shown above. Lines belonging to the selected block are indented, while blocks whose conditions are false are skipped.
11.27 Chapter Practice Exercises
Chapter Practice Exercises is an important part of Python conditional programming. It helps a program examine information and decide which instructions should run. Beginners should read the condition carefully, notice the colon, and keep the related code indented. This topic is commonly used in forms, menus, games, validation, calculations, and everyday decision-making programs.
Example
number = 8
print("Even" if number % 2 == 0 else "Odd")
Output
Even
Output explanation: Python checks the condition or pattern from top to bottom. The matching or true branch runs, producing the output shown above. Lines belonging to the selected block are indented, while blocks whose conditions are false are skipped.
11.28 Chapter Mini Project
Chapter Mini Project is an important part of Python conditional programming. It helps a program examine information and decide which instructions should run. Beginners should read the condition carefully, notice the colon, and keep the related code indented. This topic is commonly used in forms, menus, games, validation, calculations, and everyday decision-making programs.
Example
balance = 120
price = 50
if balance >= price:
balance -= price
print("Purchase approved")
print("Balance:", balance)
else:
print("Not enough money")
Output
Purchase approved
Balance: 70
Output explanation: Python checks the condition or pattern from top to bottom. The matching or true branch runs, producing the output shown above. Lines belonging to the selected block are indented, while blocks whose conditions are false are skipped.
