How Can I Iterate Through Bytes in a Python Binary File?

Iterating Through Bytes in a Binary File in Python

To read a binary file and perform operations on each byte within that file in Python, employ the following techniques:

Python >= 3.8

Leverage the walrus operator (=) for an efficient solution:

with open("myfile", "rb") as f:
    while (byte := f.read(1)):
        # Perform actions on the byte

Python >= 3

For older Python 3 versions, adopt a slightly more verbose approach:

with open("myfile", "rb") as f:
    byte = f.read(1)
    while byte != b"":
        # Perform actions on the byte
        byte = f.read(1)

Python >= 2.5

In Python 2, raw characters instead of bytes objects are retrieved:

with open("myfile", "rb") as f:
    byte = f.read(1)
    while byte != "":
        # Perform actions on the byte
        byte = f.read(1)

Python 2.4 and Earlier

Use the following method for this older version:

f = open("myfile", "rb")
try:
    byte = f.read(1)
    while byte != "":
        # Perform actions on the byte
        byte = f.read(1)
finally:
    f.close()

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