Python Regular expression matches multiple keywords simultaneously (multiple keyword matches)

Many articles have been turned over the internet ... Actually not a useful one. I found a Java one, but Java's regular expressions are a bit different from Python's.

The article in Java is "[keywd1]| [keywod2]| [KEYWD3] "mode to match, this is not in the PY, [] will match [] any one of the words.

In Python, it should be "KEYWD1|KEYWD2|KEYWD3" on the line.

Then I personally like to use Re.findall directly () such a parameter is to match the character pattern, and the other is to match the text. More convenient, can not control those search,march, what.

One more thing. Parameter sequencing for regular expression matching: Re.findall (pattern, string[, flags]) # [, Flags] is an optional argument, starting with the first few characters

Python Regular expression matches multiple keywords simultaneously (multiple keyword matches)