Question on keyword arguments
Peter Otten
__peter__ at web.de
Thu Feb 18 09:37:16 EST 2016
grsmith at atlanticbb.net wrote:
> Would this be the correct way to return
> a list as a default result.
If it does what you want it to do it is "correct" as in "complies with
specification".
> Also, would the list be the preferable result (to a python programmer) ?
A list as a return value is OK as is any other object, however,
> def test(command, return_type='LIST'):
passing the desired result type as an argument is usually not a good idea.
> """ Go to database and return data"""
> if return_type == 'LIST':
> result = ['ONE', 'TWO', 'THREE']
> else:
> result = r'0xfeONE\0exfeTWO\0xfeTHREE'
> return result
>
> if __name__ == '__main__':
> print(test('cmd'))
> print(test('cmd', 'LIST'))
> print(test('cmd', None))
> print(test('cmd', 'string'))
Make it separate functions instead:
def test(command):
return ["ONE", "TWO", "THREE"]
def test_as_string(command, sep=","):
return sep.join(test(command))
if __name__ == '__main__':
print(test("cmd"))
print(test_as_string("cmd"))
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