Set breakpoint in code

Built-in breakpoint() is equivalent to import pdb; pdb.set_trace()

breakpoint() # Python 3.7+ — drops into pdb at this line
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python15 commands
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pythondebug

More python commands

  • Run tests with pytest
    pytest -x -v --tb=short tests/

    Stop at first failure, verbose, short traceback

  • Check syntax without running
    python3 -m py_compile script.py && echo OK

    Compile to bytecode only to catch syntax errors

  • Format code with black
    black --check --diff . && black .

    Preview changes then apply Black formatting

  • Lint with ruff
    ruff check . --fix

    Fast linter + auto-fix (replaces flake8, isort, pyupgrade)

  • Type check with mypy
    mypy --strict --ignore-missing-imports src/

    Strict static type checking for a package

all 15 python commands