3 examples of 'how to print a matrix in python' in Python

103
def printMatrix(matrixP):		#fancy matrices renderer for debugging
104
	for row in matrixP:
105
	    for val in row:
106
	        print '{:4}'.format(val),
107
	    print

124
def printmatrix(list):
125
   """
126
   Prints out a 2-dimensional list cleanly.
127
   This is useful for debugging.
128
129
   PARAMETERS
130
      list  -  the 2D-list to display
131
   """
132
   # determine maximum length
133
   maxlen = 0
134
   colcount = len(list[0])
135
   for col in list:
136
      for cell in col:
137
         maxlen = max(len(str(cell)), maxlen)
138
   # print data
139
   format =  " %%%is |" % maxlen
140
   format = "|" + format*colcount
141
   for row in list:
142
      print(format % tuple(row))

94
def __repr__(self):
95
96
    def format_row(row):
97
        return "(%s)" % ", ".join(str(value) for value in row )
98
99
    return "Matrix44(%s)" % \
100
        ",".join(format_row(row) for row in self.rows())