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Suppose I want a regular expression that matches both "Sent from my iPhone" and "Sent from my iPod". How do I write such an expression?
I tried things like:
re.compile("Sent from my [iPhone]|[iPod]") but doesn't seem to work.
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[] denotes a character class. () denotes a capturing group. [a-z0-9] -- One character that is in the range of a-z OR 0-9. (a-z0-9) -- Explicit capture of a-z0-9 .
Alternation is the term in regular expression that is actually a simple “OR”. In a regular expression it is denoted with a vertical line character | . For instance, we need to find programming languages: HTML, PHP, Java or JavaScript.
$ means "Match the end of the string" (the position after the last character in the string). Both are called anchors and ensure that the entire string is matched instead of just a substring.
re.compile("Sent from my (iPhone|iPod)") 
re.compile("Sent from my (?:iPhone|iPod)") If you need to capture matches, remove the ?:.
Fyi, your regex didn't work because you are testing for one character out of i,P,h,o,n,e or one character out of i,P,o,d..
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