学ぶ Conditional Logic for Smart Decisions | Everyday Calculations and Automation

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Conditional logic is a powerful tool in Python that lets you write scripts that can "think" and make decisions. The core building blocks for decision-making are the if, elif, and else statements. These allow your program to choose different actions based on the data it processes. For example, you might want your script to alert you if your spending goes over your income, or to sort your daily expenses into categories. Understanding how to use these statements is key for building smart, responsive scripts.


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income = 2000
expenses = 2100

if expenses > income:
    print("Warning: You have exceeded your income!")
elif expenses == income:
    print("Notice: Your expenses match your income.")
else:
    print("Good job: You are within your budget.")

You can make your decisions even smarter by combining conditions and using comparison operators. In Python, comparison operators such as >, <, >=, <=, ==, and != let you compare values. You can also combine multiple conditions using and, or, and not to create more complex rules. This is especially useful when you want to check several factors before making a decision, such as whether your spending is both over a certain amount and within a specific category.


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daily_spending = 45
budget_limit = 50

if daily_spending <= budget_limit:
    print("Spending is within budget.")
else:
    print("Spending is over budget.")

1. What is the purpose of an if-statement in Python?

2. Which operator checks if two values are equal?

3. Fill in the blanks to complete a conditional that checks if a value is above a threshold.

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セクション 1. 章 6

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セクション 1. 章 6