How to use 'add tuple to list python' in Python

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13def convertTupleListToDict(list_of_tuples):
14 dictToReturn = {}
15 for item in list_of_tuples:
16 if item[0] not in dictToReturn:
17 index_list = []
18 index_list.append(item[1])
19 dictToReturn[item[0]] = index_list
20 else:
21 dictToReturn[item[0]].append(item[1])
22 return dictToReturn
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1555def _visitListOrTuple(self, node, build_op, build_ex_op):
1556 self.update_lineno(node)
1557 if isinstance(node.ctx, ast.Store):
1558 self._visitUnpack(node)
1559 starred_load = False
1560 else:
1561 starred_load = self.hasStarred(node.elts)
1562
1563 chunks = 0
1564 in_chunk = 0
1565
1566 def out_chunk():
1567 nonlocal chunks, in_chunk
1568 if in_chunk:
1569 self.emit('BUILD_TUPLE', in_chunk)
1570 in_chunk = 0
1571 chunks += 1
1572
1573 for elt in node.elts:
1574 if starred_load:
1575 if isinstance(elt, ast.Starred):
1576 out_chunk()
1577 chunks += 1
1578 else:
1579 in_chunk += 1
1580 self.visit(elt)
1581 # Output trailing chunk, if any
1582 out_chunk()
1583
1584 if isinstance(node.ctx, ast.Load):
1585 if starred_load:
1586 self.emit(build_ex_op, chunks)
1587 else:
1588 self.emit(build_op, len(node.elts))

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