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I had an innocent question about the format to use when listing function arguments in docstrings. In the PEP 257 doc, there's a single example:
 def complex(real=0.0, imag=0.0):
 """Form a complex number.
 Keyword arguments:
 real -- the real part (default 0.0)
 imag -- the imaginary part (default 0.0)
I went digging through Lib/ for a good example to follow, but felt a little unsure because the exact format seemed to differ ever so slightly sometimes.
Like in ipaddress.py, a colon is used instead of two hyphens, and it's indented:
 def ip_address(address):
 """Take an IP string/int and return an object of the correct type.
 Args:
 address: A string or integer, the IP address. Either IPv4 or
 IPv6 addresses may be supplied; integers less than 2**32 will
 be considered to be IPv4 by default.
Is there an "ideal" example in the source to try to copy? 
(or maybe this is just a use-your-common-sense thing)