Float representation of binary in Python (bits not hex)

Question

How to get the 32 bit float representation of a string as binary IEEE 754?

Example

'00111111100000000000000000000000' -> 1.00

This question is the reverse of: Binary representation of float in Python (bits not hex) and I couldn't find the answer elsewhere. Please note that I am very new to coding so please be gentle.

Answer 1

Using struct.pack and struct.unpack:

>>> import struct
>>> n = '00111111100000000000000000000000'
>>> struct.unpack('f', struct.pack('i', int(n, 2)))[0]
1.0

• int(.., 2) to convert the binary representation to int (base 2)
• struct.pack('i', ..) to convert bytes (i: 32bit int)
• struct.unpack('f', ...)[0] to convert bytes back to float.

For other struct format character, see Format charactes - struct module documentation.