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POcopy list in python
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  1. POcopy list in python
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    copied!<p>As I am trying to make a copy of a list and do some stuff with the copy of the list. Somehow my original list is modified as well. I already looked at different memory allocatinos and different ways of assigning the lists. So far no luck... Any ideas?</p> <pre><code> row = 0 column = 0 table1 = copy.copy(table[:]) temptable = [] temptable = table[:] print id(table) print table print id(table1) print table1 print id(temptable) print temptable for i in temptable: for j in i: if type(j) == str: temptable[row][column] = 0 column = column + 1 column = 0 row = row + 1 result=[] for column in zip(*temptable): try: result.append(sum(map(int,column))) except ValueError: result.append(0) print table print table1 print temptable </code></pre> <p>/#### Results</p> <pre><code>163783148 [[0, 'ZZZ', 'XXX', 'YYY', 'AAA', 0, 0], ['BBB', 1, 1, 0, 26, 28, 0], ['CCC', 26, 0, 0, 0, 26, 0], ['DDD', 0, 26, 0, 0, 26, 0], ['EEE', 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0]] 163669036 [[0, 'ZZZ', 'XXX', 'YYY', 'AAA', 0, 0], ['BBB', 1, 1, 0, 26, 28, 0], ['CCC', 26, 0, 0, 0, 26, 0], ['DDD', 0, 26, 0, 0, 26, 0], ['EEE', 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0]] 163783468 [[0, 'ZZZ', 'XXX', 'YYY', 'AAA', 0, 0], ['BBB', 1, 1, 0, 26, 28, 0], ['CCC', 26, 0, 0, 0, 26, 0], ['DDD', 0, 26, 0, 0, 26, 0], ['EEE', 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0]] [[0, 0, 0, 0, 0, 0, 0], [0, 1, 1, 0, 26, 28, 0], [0, 26, 0, 0, 0, 26, 0], [0, 0, 26, 0, 0, 26, 0], [0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0]] [[0, 0, 0, 0, 0, 0, 0], [0, 1, 1, 0, 26, 28, 0], [0, 26, 0, 0, 0, 26, 0], [0, 0, 26, 0, 0, 26, 0], [0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0]] [[0, 0, 0, 0, 0, 0, 0], [0, 1, 1, 0, 26, 28, 0], [0, 26, 0, 0, 0, 26, 0], [0, 0, 26, 0, 0, 26, 0], [0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0]] </code></pre>
 

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