Beginner Python

Write your first lines of Python, use print(), add comments, and learn to recognize early errors.

Understand values, variables, number types, arithmetic, and the difference between expressions and statements.

Create, combine, inspect, and slice text while learning Python's most useful string tools.

Read input from a user and convert it into the data types your program needs.

Make decisions with Boolean values, comparisons, logical operators, and truthy or falsy data.

Guide program flow with if, elif, else, nested conditions, and input validation.

Store ordered collections in lists and retrieve individual items or slices.

Repeat work with for loops, range(), break, continue, and accumulator patterns.

Change, copy, build, sort, and combine lists without being surprised by mutation.

Use while loops for condition-driven repetition, validation, menus, and sentinel values.

Choose and use dictionaries, tuples, and sets, including nested data and safe lookups.

Turn repeated logic into reusable functions with parameters, return values, scope, and docstrings.

Organize code with modules, imports, the standard library, and your own reusable files.

Work with file paths, read and write text files, and read tabular CSV data.

Recognize and handle exceptions, validate input, and debug programs systematically.

Write readable Python, follow common style conventions, document intent, and understand unfamiliar code.