Clever Geek Handbook

How is the original string useful in Python?

I know the raw string r

or operator r

suppresses the meaning of the escape characters, but in what situation would that really be useful?

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Raw strings are typically used for regular expressions that must include a backslash.

re.match(r'\b(\w)+', string)  # instead of re.match('(\\w)+', string


They are also useful for DOS file paths that would otherwise have to double each path separator.

path = r'C:\some\dir'  # instead of 'C:\\some\\dir'
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They save you from aberrant toothpick syndrome .



a situation in which a quoted expression becomes unreadable because it contains a large number of escape characters, usually a backslash ("\")

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Raw strings are useful because they save you from adding escape characters just to avoid "escape characters". For example, r'url\1'

equivalent to'url\\1'

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