Converting Numbers to Hexadecimal in Python

Learn how to convert decimal numbers to hexadecimal in Python with examples and step-by-step explanations of the process using Python's built-in functions and methods.
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Converting Numbers to Hexadecimal in Python

Hexadecimal (hex) representation is commonly used in computing to express binary-coded values in a more human-readable form. In Python, you can easily convert decimal numbers to hexadecimal using built-in functions. This guide will guide you through the process with examples.

Using the hex() Function

The hex() function in Python is a built-in method that converts an integer to a lowercase hexadecimal string with the prefix '0x'. Here's a simple example:

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This will output:

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You can extract the actual hex value without the '0x' prefix by using string slicing:

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This will output:

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Formatting with format()

Another way to convert numbers to hexadecimal is by using the format() function. The {0:x} format specifier represents an integer as a lowercase hexadecimal string:

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This will also output:

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Handling Negative Numbers

When dealing with negative numbers, it's important to note that the hex() function represents them with the - sign. If you want a consistent format, you can use format():

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This will output:

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In this example, & (2**32-1) is used to convert the negative number to its two's complement representation.

Conclusion

Converting decimal numbers to hexadecimal in Python is straightforward, thanks to the built-in functions hex() and format(). Whether you need the '0x' prefix or just the raw hexadecimal value, Python provides the tools to make the conversion process simple and efficient.