In python, how can I prevent this from returning a list of empty strings?
>>> re.findall(re.compile("(?!lala)"),"lala")
['', '', '', '']
In python, how can I prevent this from returning a list of empty strings?
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In python, how can I prevent this from returning a list of empty strings?
>>> re.findall(re.compile("(?!lala)"),"lala")
['', '', '', '']
You are looking for an empty string that is not followed by the text
lala, a negative lookahead assertion.Since there are 4 such positions with an empty string (in-between the letters and at the end), there are 4 empty matches.
It is returning exactly what your are looking for, perhaps you were looking for something else instead?