The Python Re Plus (+) Symbol in Regular Expressions

This video is all about the plus "+" symbol in Python's re library. Study it carefully and master this important piece of knowledge once and for all!

Say, you have any regular expression A. The regular expression (regex) A+ then matches one or more occurrences of A. We call the "+" symbol the at-least-once quantifier because it requires at least one occurrence of the preceding regex. For example, the regular expression 'yes+' matches strings 'yes', 'yess', and 'yesssssss'. But it does neither match the string 'ye', nor the empty string '' because the plus quantifier + does not apply to the whole regex 'yes' but only to the preceding regex 's'.

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[cgme]

Thank you! While they are useful, I hate regular expressions.