wcwidth is a Python library for calculating the display width of Unicode characters. When calculating the display width of a character string, it is necessary to consider that different characters may have different display widths. For example, Chinese characters usually occupy two character positions, while English characters usually occupy only one character position.
The wcwidth library provides a function named wcwidth() for calculating the display width of a single Unicode character. The parameter of this function is a Unicode character, and the return value is the display width of this character. If the character cannot be displayed (such as a control character), the return value is -1.
The following is a simple sample code that demonstrates how to calculate the display width of a string using the wcwidth library:
from wcwidth import wcwidth
text = 'Hello, 世界!'
width = 0
for char in text:
width += wcwidth(char)
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