How do I turn a file into a RAW bitstring?

Question

How do I read a file and turn it to a RAW bit string? For example I open an image that is 512kb, It reads the file byte by byte, and it spits out the long bit string that is the file? I would like to apply some functions to the strings but I can't figure a way to unpack files consistently.

I imagine what I need is something that reads a file byte by byte with no care of the original file format... As it reads byte by byte, a giant integer like thing file bit string is created.

I used a Python's bit generator and NumPy, that seemed to work well, but The program didn't behave well with actual files. What is the best way to unpack files into 1's and 0's?

How do I read any file and store the contents as an easy to read HEX file? or BIN file? And how do I stop the "open" function from truncating leading 0's!

UGH!

Using Python or GOLANG, how do I open any file and create an uninterrupted bit string of the contents where every leading zero in a BYTE read is significant?

Answer 1

After looking and asking everyone I'm acquainted to I found my answer. The best way to turn any file into a RAW HEX string is by

f = open("file_name", "rb")
content = f.read().hex()
with open("File HEX bitstream.txt", "w") as text_file:
    print(f"HEX Bitstream Import", content, file=text_file)
f.close()