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Alex Rivera
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Python is not my best language, and so I'm not all that good at finding the most efficient solutions to some of my problems. I have a very large string (coming from a 30 MB file) and I need to check if that file contains a smaller substring (this string is only a few dozen characters). The way I am currently doing it is: if small_string in large_string: # logic here But this seems to be very inefficient because it will check every possible sequence of characters in the file. I know that there will only be an exact match on a newline, so would it be better to read the file in as a list and iterate through that list to match? EDIT: To clear up some confusion on "matching on a newline only", here's an example: small_string = "This is a line" big_string = "This is a line\nThis is another line\nThis is yet another" If I'm not mistake, the in keyword will check all sequences, not just every line.
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