将十六进制转换为浮点数

How to convert the following hex string to float (single precision 32-bit) in Python?

"41973333" -> 1.88999996185302734375E1

"41995C29" -> 1.91700000762939453125E1

"470FC614" -> 3.6806078125E4

解决方案

在 Python 3 中:

>>> import struct
>>> struct.unpack('!f', bytes.fromhex('41973333'))[0]
18.899999618530273
>>> struct.unpack('!f', bytes.fromhex('41995C29'))[0]
19.170000076293945
>>> struct.unpack('!f', bytes.fromhex('470FC614'))[0]
36806.078125

在 Python 2 中:

>>> import struct
>>> struct.unpack('!f', '41973333'.decode('hex'))[0]
18.899999618530273
>>> struct.unpack('!f', '41995C29'.decode('hex'))[0]
19.170000076293945
>>> struct.unpack('!f', '470FC614'.decode('hex'))[0]
36806.078125