Python's chr() Function

The chr() function in Python is a handy tool for converting integers into characters. Its name, a shorthand for "character", aptly describes its purpose.

chr(x)

Here, x is an integer within the range of 0 to 1,114,111.

What chr() does is simple yet powerful: it transforms the given integer into its corresponding character based on the Unicode standard.

This function is your go-to for mapping numbers to characters.

Be mindful that providing a decimal or a number outside the 0 to 1,114,111 range triggers a `ValueError` in Python, as these numbers fall outside valid Unicode codes. To determine a character's Unicode number, Python's ord() function is the perfect companion.

Let's delve into its functionality with some clear examples.

Enter chr(65) in Python's console.

chr(65)

Executing this, you'll get the character 'A', which Unicode/Ascii associates with the integer 65.

The result is presented as a string.

A

Try typing chr(9786) next.

chr(9786)

This time, chr() returns the '☺' character, a universally recognized symbol for a smiling face.

☺

chr() is a window into the diverse world of Unicode symbols, covering alphabets from across the globe.

For instance, input chr(20013)

chr(20013)

And you’ll see the Chinese character 中, which is linked to the number 20013 in Unicode.

中

chr() is incredibly versatile. From generating random passwords combining letters and symbols to crafting a basic encryption system for secure messaging, the possibilities are extensive.

These are just a few examples of how chr() can be applied in real-world scenarios.