Lesson 4
Exploring Variables and Strings in Python
What You'll Learn

Ready to explore combining text with variables in Python using f-strings? This powerful feature makes it effortless to create dynamic and readable strings by embedding variables directly within them.

Code Example

For a trip planning scenario, consider these variables:

Python
1# Travel variables 2destination = "Paris" 3number_of_days = 5 4trip_cost = 1200.50 # Notice how we can store numbers in variables that are not integers!

Using f-strings enables you to neatly include variable values in your text output:

Python
1# Using f-strings for travel details 2print(f"I am planning a trip to {destination}.") 3print(f"The trip will be for {number_of_days} days.") 4print(f"The estimated cost of the trip is ${trip_cost}.")

output:

Plain text
1I am planning a trip to Paris. 2The trip will be for 5 days. 3The estimated cost of the trip is $1200.5.

f-strings allow for inline variable insertion, which means you can directly insert the value of a variable into a string by prefacing the string with f and enclosing variable names in curly braces {}.

Why It Matters

F-strings offer a concise and readable way to incorporate variables into strings, enhancing code clarity. They're especially useful for outputting data in a more engaging and informative manner. Through practice, you'll get comfortable with this skill, which is crucial for effective Python programming.

Let's dive into the practice exercises!

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