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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def fn_minimum_argcount(callable):
 """Returns the minimum number of arguments that must be provided for the call to succeed."""

    fn = get_fn(callable)
    available_argcount = fn_available_argcount(callable)
    try:
        return available_argcount - len(fn.__defaults__)
    except TypeError:
        return available_argcount