python re split to split by spaces commas and periods but not in cases like 1 000 or 1 50

Question

I want to use python re split   to split a string into individual words by spaces  commas and periods  But I don t want  1 200  to be split into   1    200   or   1 2   to be split into   1    2     Example  l    one two 3 4 5 6 seven eight nine ten    The result should be   one    two    3 4    5 6     seven    eight    nine    ten

User · Answer

So you want to split on spaces  and on commas and periods that aren t surrounded by numbers  This should work   r      lt   0-9          0-9

User · Answer

Use a negative lookahead and a negative lookbehind    gt  s    one two 3 4 5 6 seven eight nine ten   gt  parts   re split   s    lt   d         d    s    one    two    3 4    5 6    seven    eight    nine    ten     In other words  you always split by  s  whitespace   and only split by commas and periods if they are not followed     d  or preceded    lt   d  by a digit   DEMO   EDIT  As per  verdesmarald comment  you may want to use the following instead    gt  s    one two 3 4 5 6 seven eight nine ten 1 2 a 5   gt  print re split   s    lt   d              d    s    one    two    3 4    5 6    seven    eight    nine    ten    1 2    a    5     This will split  1 2 a 5  into   1 2    a    5     DEMO

[python] python re.split() to split by spaces, commas, and periods, but not in cases like 1,000 or 1.50

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