platform binary representation --- 3 questions

[Skaperen]

for a given float value i want to get the platform binary representation as a sequence of bytes or a string of hexadecimal digits. is there a trivial way to do this? can it also work for ints up to the maximum value the platform can handle? how would i find what that maximum value is?

[bowlofred]

I'd start with the C api and hope it works for most cases. I don't know a pure python way to see it.

I assume you're talking cpython. This RealPython page takes you through how some of the integer and floats are handled as python objects.

[deanhystad]

You can use the struct library to pack various sized things to a bytearray.

[DeaD_EyE]

In [11]: sys.float_info.max.hex()
Out[11]: '0x1.fffffffffffffp+1023'

I don't know since when it was introduced, but the hex method seems new to me.
I use Python 3.9, older version may not have it.

[Skaperen]

In [11]: sys.float_info.max.hex()
Out[11]: '0x1.fffffffffffffp+1023'

I don't know since when it was introduced, but the hex method seems new to me.
I use Python 3.9, older version may not have it.

i use 3.6 so i had to import sys first. then it worked.