How do I return a value when @click.option is used to pass a command line argument to a function?

Question

I am trying to use click python package to pass a command line argument to a function. The example from official documentation works as explained. But nowhere in the documentati

Answer 1

Apparently this click package makes your hello() function never return. So the print never happens. If I were you, I would not use this unintuitive package and instead use argparse which is great at command line processing in Python (one of the best in any language, in my opinion).

Here's a working version of your code using argparse. It works out-of-the-box with Python (any version 2.7 or later), and it's easy to understand.

def hello(count):
    """Simple program that greets NAME for a total of COUNT times."""
    for x in range(count):
        print('Hello')
    return "hello hi"

if __name__ == '__main__':
    import argparse
    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument('--count', default=3, type=int, help='Number of greetings.')
    args = parser.parse_args()

    print(hello(args.count))