Variables and Strings

15 min In Progress

Learning Objectives

  • Understand what a variable is and how to name it
  • Create and manipulate string values
  • Use the print() function to output data

What is a Variable?

A variable is a named container that stores a value. In Python, you create a variable by assigning a value with the = operator.

name = "Alice"
age = 30
print(name)
print(age)

Working with Strings

Strings are text values surrounded by single or double quotes. You can combine strings with + and repeat them with *.

greeting = "Hello"
name = "World"
message = greeting + ", " + name + "!"
print(message)
print("Ha" * 3)

String Formatting with f-strings

f-strings let you embed expressions inside string literals using curly braces.

first_name = "Ada"
last_name = "Lovelace"
print(f"My name is {first_name} {last_name}")

Course Example: Name Tag Generator

This script from your course uses command-line arguments to build a simple name tag.

When running this example, provide first and last names as arguments.
"""
This module is a name tag generator.
"""
import sys

print("*---------------------------------")
print("|", "First name: ", sys.argv[1])
print("|", "Second name: ", sys.argv[2])
print("*---------------------------------")

📝 Exercise: Create Your Own Bio

Write a script that creates variables for your name, city, and hobby, then prints a sentence using an f-string.

code.py
Output

            

        

    


    

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