Python Fire PyPI

    Python Fire is a library for automatically generating command line interfaces (CLIs) from absolutely any Python object.

    • Python Fire is a simple way to create a CLI in Python. [1]
    • Python Fire is a helpful tool for developing and debugging Python code. [2]
    • Python Fire helps with exploring existing code or turning other people's code into a CLI. [3]
    • Python Fire makes transitioning between Bash and Python easier. [4]
    • Python Fire makes using a Python REPL easier by setting up the REPL with the modules and variables you'll need already imported and created. [5]


    To install Python Fire with pip, run: pip install fire

    To install Python Fire with conda, run: conda install fire -c conda-forge

    To install Python Fire from source, first clone the repository and then run: python install

    Basic Usage

    You can call Fire on any Python object:
    functions, classes, modules, objects, dictionaries, lists, tuples, etc. They all work!

    Here's an example of calling Fire on a function.

    import fire
    def hello(name="World"):
      return "Hello %s!" % name
    if __name__ == '__main__':

    Then, from the command line, you can run:

    python  # Hello World!
    python --name=David  # Hello David!
    python --help  # Shows usage information.

    Here's an example of calling Fire on a class.

    import fire
    class Calculator(object):
      """A simple calculator class."""
      def double(self, number):
        return 2 * number
    if __name__ == '__main__':

    Then, from the command line, you can run:

    python double 10  # 20
    python double --number=15  # 30

    To learn how Fire behaves on functions, objects, dicts, lists, etc, and to learn about Fire's other features, see the Using a Fire CLI page.

    For additional examples, see The Python Fire Guide.

    Why is it called Fire?

    When you call Fire, it fires off (executes) your command.

    Where can I learn more?

    Please see The Python Fire Guide.


    Setup Command Notes
    install pip install fire
    Creating a CLI Command Notes
    import import fire
    Call fire.Fire() Turns the current module into a Fire CLI.
    Call fire.Fire(component) Turns component into a Fire CLI.
    Using a CLI Command Notes
    Help command --help or command -- --help
    REPL command -- --interactive Enters interactive mode.
    Separator command -- --separator=X Sets the separator to X. The default separator is -.
    Completion command -- --completion [shell] Generates a completion script for the CLI.
    Trace command -- --trace Gets a Fire trace for the command.
    Verbose command -- --verbose

    Note that these flags are separated from the Fire command by an isolated --.


    Licensed under the Apache 2.0 License.


    This is not an official Google product.


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    发行版本 8

    Python Fire v0.4.0


    贡献者 50



    • Python 99.6 %
    • Shell 0.4 %