如何从没有安装 pip 的模块执行 python function

Question

How can I execute python function from a package without main / pip install in editable mode

eg

my sample.py is

def cli():
    print("I'm running myTest")
    return 0

and setup.py as

setup(
    name="sample",
    version="1.0",
    py_modules=["sample"],
    include_package_data=True,
    entry_points="""
        [console_scripts]
        sample=sample:cli
    """,
)

now if I do pip install -e. and execute sample I get desired o/p as

I'm running myTest

However with this I'm not able to debug it, What's ideal way to execute function from a module without pip install / using another python file,

also tried with python -m sample but that gives no o/p since there is no entrypoint

Answer 1

So call your function in your sample.py :

def cli():
    print("I'm running myTest")
    return 0

if __name__ == "__main__":
    cli()

Then, from the command line:

python sample.py

See here for what if __name__ == "__main__": means: https://www.freecodecamp.org/news/if-name-main-python-example/

If you want to leave sample.py completely unmodified, then you just create a new file test_sample.py and import sample to use it like so:

import sample

sample.cli()

or, as an alternative method of import, test_sample.py can also be:

from sample import cli

cli()

Then you run:

python test_sample.py

Just make sure test_sample.py is in the same directory as sample.py .