Split string based on a regular expression

Question

I have the output of a command in tabular form  I m parsing this output from a result file and storing it in a string  Each element in one row is separated by one or more whitespace characters  thus I m using regular expressions to match 1 or more spaces and split it  However  a space is being inserted between every element    gt  gt  gt  str1  a    b     c      d    spaces are irregular  gt  gt  gt  str1  a    b     c      d   gt  gt  gt  str2 re split         str1   gt  gt  gt  str2   a         b         c         d     1 space element between      Is there a better way to do this    After each split str2 is appended to a list

User · Answer

When you use re split and the split pattern contains capturing groups  the groups are retained in the output   If you don t want this  use a non-capturing group instead

User · Answer

Its very simple actually  Try this   str1  a    b     c      d  splitStr1   str1 split   print splitStr1

User · Answer

The str split method will automatically remove all white space between items    gt  gt  gt  str1    a    b     c      d   gt  gt  gt  str1 split     a    b    c    d     Docs are here  http   docs python org library stdtypes html str split

User · Answer

By using      you are capturing the group  if you simply remove them you will not have this problem    gt  gt  gt  str1    a    b     c      d   gt  gt  gt  re split       str1    a    b    c    d     However there is no need for regex  str split without any delimiter specified will split this by whitespace for you  This would be the best way in this case    gt  gt  gt  str1 split     a    b    c    d     If you really wanted regex you can use this    s  represents whitespace and it s clearer     gt  gt  gt  re split   s    str1    a    b    c    d     or you can find all non-whitespace characters   gt  gt  gt  re findall r  S   str1    a    b    c    d

[python] Split string based on a regular expression

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