[FIXED] Split string when a number is followed by a letter

Issue

I am dealing with a function that returns variable names with no space between them. Do you have any suggestions for fixing the issue, for example using regex?

Example output: JS876383JS782221JS7721740, whose component should be separated into something like [JS876383, JS782221 JS7721740].

Solution

re.split(r"(?<=\d)(?=[A-Za-z])", "JS876383JS782221JS7721740")
# ['JS876383', 'JS782221', 'JS7721740']

The (?<=\d) is a lookbehind for any digit, and the (?=[A-Za-z]) lookaheads to any letter.

Answered By - Eric Jin