Any built-in function for smallest positive floating point number?

[Xavier Ho]

Actually, that was double precision. You asked for float precision.

>>> struct.unpack('f', struct.pack('L', 1))[0]
1.4012984643248171e-45

which is the same as:
>>> 2**-149
1.4012984643248171e-45

I think that's it. Sorry for posting to the list three times in a row.
corrections welcome.
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