Python If, Else, Elif Statements: Multiple Conditions

Building upon the Python If, Else, Elif Statements lesson, you’ll continue to develop your Python programming skills by learning to answer questions using conditional statements such as if, else, and elif statements that specify multiple conditions.

In this lesson, you’ll learn concepts such as conditional statements that specify multiple conditions to control the flow of your code; the logical operators such as and and or; and how to use comparison operators such as >, <, <=, etc. Combining all of these concepts is crucial for both a Python developer and a data scientist—the combination of Python conditionals gives you more control over your code. For example, if you have a list of mobile applications, and you want to compute the average, you could use conditional statements and comparison operators to see the average rating of apps that aren’t free vs. those that are free.

When you finish this lesson, you’ll feel more confident in using Python for data science and data analysis. If you feel like you need practice, feel free to think of something you can create using what you’ve learned so far; it doesn’t have to be big—it can be something like using conditional statements to categorize entries in a dataset.

Objectives

  • Learn how to employ if, else, and elif statements
  • Lean how to employ logical operators
  • Learn to employ comparison operators
  • Learn how to employ multiple conditional statements

Lesson Outline

  1. Multiple Conditions
  2. The or Operator
  3. Combining Logical Operators
  4. Comparison Operators
  5. Comparison Operator Applications
  6. The else Clause
  7. The elif Clause
  8. Else vs. elif
  9. Review
  10. Takeaways

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