3 examples of 'printing matrix in python' in Python

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def printmatrix(list):
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   """
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   Prints out a 2-dimensional list cleanly.
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   This is useful for debugging.
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   PARAMETERS
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      list  -  the 2D-list to display
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   """
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   # determine maximum length
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   maxlen = 0
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   colcount = len(list[0])
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   for col in list:
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      for cell in col:
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         maxlen = max(len(str(cell)), maxlen)
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   # print data
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   format =  " %%%is |" % maxlen
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   format = "|" + format*colcount
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   for row in list:
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      print(format % tuple(row))

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def printMatrix(matrixP):		#fancy matrices renderer for debugging
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	for row in matrixP:
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	    for val in row:
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	        print '{:4}'.format(val),
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	    print

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def __repr__(self):
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    def format_row(row):
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        return "(%s)" % ", ".join(str(value) for value in row )
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    return "Matrix44(%s)" % \
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        ",".join(format_row(row) for row in self.rows())