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98f872bed1
Having lists and dictionaries as default argument values is a bad
idea, because the same instance of list/dict will be used by all
objects instantiated using such constructor:
def appendItem(itemName, itemList=[]):
itemList.append(itemName)
return itemList
print(appendItem('notebook'))
print(appendItem('pencil'))
print(appendItem('eraser'))
Output:
['notebook']
['notebook', 'pencil']
['notebook', 'pencil', 'eraser']
Change-Id: I83d718ff9c3ff6aef47930f38d7f50424f9b880f