How Do I Convert Hexadecimal Strings to Integers in Python?

Converting Hexadecimal Strings to Integers in Python

When working with data stored in hexadecimal notation, it often becomes necessary to convert these values into integers for further processing. Python provides several methods to accomplish this conversion, depending on the presence or absence of the "0x" radix prefix.

Without the "0x" Prefix

In the absence of the "0x" prefix, Python's int() function requires explicit specification of the hexadecimal base:

x = int("deadbeef", 16)

This operation converts the hexadecimal string "deadbeef" into its decimal equivalent, which is 3735928559 in this case.

With the "0x" Prefix

If the hexadecimal string contains the "0x" prefix, Python can automatically determine its hexadecimal nature:

x = int("0xdeadbeef")

In this scenario, no additional base specification is required, and Python correctly converts "0xdeadbeef" to 3735928559.

Note: It is crucial to set the second parameter of int() to 0 to trigger the automatic guessing of the base. If no base is specified, Python defaults to base-10, potentially leading to incorrect conversions in some cases.

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