How to convert a float into hex

Question

In Python I need to convert a bunch of floats into hexadecimal. It needs to be zero padded (for instance, 0x00000010 instead of 0x10). Just like http://gregstoll.dyndns.org/

Answer 1

Further to Jonathon Reinhart's very helpful answer. I needed this to send a floating point number as bytes over UDP

import struct

# define double_to_hex (or float_to_hex)
def double_to_hex(f):
    return hex(struct.unpack('d', doubleAsBytes)[0] # or '>f' for float_to_hex