How can an and operator be emulated in regular expressions in Python? Specifically, I want to return a match on a string if and only if 2 or more substrings all appear in the string. For example, for a string s = 'Jones John' and substrings sg0 = 'Jones' and sg1 = 'John', I want to return a match, but for substrings sg0 = 'Jones' and sg2 = 'Frank' I do not want to return a match. Because the expression 'A and B' is logically equivalent to 'not (not A or not B)' I thought I could try something along those lines, but can't crack it.
Ross
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