How to Convert Hex Strings to Integers in Python?

Converting Hex Strings to Integers in Python

When working with hex strings, the need to convert them to integers often arises. In Python, there are multiple approaches to achieve this conversion.

Without the 0x Prefix

In the absence of the 0x prefix, the base must be explicitly specified during conversion. This is because Python cannot automatically distinguish between hex and decimal representations without this prefix. For instance, to convert the hex string "deadbeef" to an integer:

x = int("deadbeef", 16)

Here, the base 16 is specified to indicate that the string is a hexadecimal representation.

With the 0x Prefix

With the inclusion of the 0x prefix, Python can automatically detect hex strings and convert them to integers. However, it requires specifying the base as 0 in the int() function:

print(int("0xdeadbeef", 0))

This would output the integer value 3735928559, confirming the successful conversion.

It's important to note that omitting the second parameter (base) while using the 0x prefix will result in Python assuming a base-10 (decimal) representation, potentially leading to incorrect conversions.

The above is the detailed content of How to Convert Hex Strings to Integers in Python?. For more information, please follow other related articles on the PHP Chinese website!