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Python Field Guide

A hands-on reference for learning Python — run every example on this site without installing anything.

What's inside

  • Basic Data Types — the scalar building blocks (int, float, str, bool) that hold a single value.
  • Collections of Data — list, tuple, dict, and set, for grouping multiple values together.
  • Conditionals — if/elif/else statements that run code only when a condition is True.
  • Loops — for and while loops for repeating a block of code.
  • OOP — classes and objects, for bundling data together with the behavior that belongs to it.

Try it yourself

# run this code below
discoveries = ["write a comment"]
discoveries.append("create a list")

print("Field journal created.\n")
print("Explorer begins their first expedition into Python.\n")
discoveries.append("print console output")

print("Discoveries so far:")

discoveries.append("iterate through a list with a for loop")
discoveries.append("string concatenation")
for discovery in discoveries: 
    print("-\t"+discovery)