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numpy.char.chararray.flatten
method
char.chararray.flatten(order='C')- 
    
Return a copy of the array collapsed into one dimension.
- Parameters
 - 
      
order{‘C’, ‘F’, ‘A’, ‘K’}, optional- 
        
‘C’ means to flatten in row-major (C-style) order. ‘F’ means to flatten in column-major (Fortran- style) order. ‘A’ means to flatten in column-major order if
ais Fortran contiguous in memory, row-major order otherwise. ‘K’ means to flattenain the order the elements occur in memory. The default is ‘C’. 
 - Returns
 - 
      
yndarray- 
        
A copy of the input array, flattened to one dimension.
 
 
Examples
>>> a = np.array([[1,2], [3,4]]) >>> a.flatten() array([1, 2, 3, 4]) >>> a.flatten('F') array([1, 3, 2, 4]) 
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 https://numpy.org/doc/1.20/reference/generated/numpy.char.chararray.flatten.html