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numpy.core.defchararray.split
numpy.core.defchararray.split(a, sep=None, maxsplit=None)[source]- 
    
For each element in
a, return a list of the words in the string, usingsepas the delimiter string.Calls
str.splitelement-wise.Parameters: - 
           
a : array_like of str or unicode - 
           
sep : str or unicode, optional - 
           
If
sepis not specified orNone, any whitespace string is a separator. - 
           
maxsplit : int, optional - 
           
If
maxsplitis given, at mostmaxsplitsplits are done. 
Returns: - 
           
out : ndarray - 
           
Array of list objects
 
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 https://docs.scipy.org/doc/numpy-1.16.1/reference/generated/numpy.core.defchararray.split.html