A Python cheat sheet offers a quick reference to essential Python syntax and commands. Key elements include variable declaration (`x = 5`), data types (strings, lists, dictionaries), loops (`for`, `while`), and conditional statements (`if`, `elif`, `else`). It also covers common functions like `print()`, `len()`, `input()`, and `range()`. Useful list operations include `append()`, `pop()`, and slicing (`list[start:end]`). For dictionaries, methods like `get()`, `keys()`, and `values()` are highlighted. Functions are defined with `def`, and libraries are imported using `import`. A Python cheat sheet is an invaluable tool for quick reference during development or while learning Python.