How Can I Pad Strings with Spaces in Python?

Padding Strings with Spaces in Python

While the "d" format string can be used to pad a string with zeros, a more general way to pad a string with any character is required. This is where the str.ljust(width[, fillchar]) method comes into play.

How it Works

The str.ljust() method returns a copy of the string left-justified in a string of length width. If width is less than the length of the string, no padding is applied. Otherwise, the string is padded with the specified fillchar character (default is a space).

Example

Consider the following example:

>>> 'hi'.ljust(10)
'hi        '

In this example, the string 'hi' is padded with spaces to a total width of 10. Note the 8 spaces that were added to the end of the original string.

Conclusion

The str.ljust() method is a versatile tool for padding strings with spaces or any other desired character. It provides a concise and efficient solution compared to manually measuring string lengths and concatenating spaces.

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