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- import functools
- # from jaraco.functools 3.5
- def pass_none(func):
- """
- Wrap func so it's not called if its first param is None
- >>> print_text = pass_none(print)
- >>> print_text('text')
- text
- >>> print_text(None)
- """
- @functools.wraps(func)
- def wrapper(param, *args, **kwargs):
- if param is not None:
- return func(param, *args, **kwargs)
- return wrapper
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