dict = {'a':7,'b':3,'c':4,'d':1,'e':8,}
print dict
order_dict = collections.OrderedDict()
order_dict['a'] = 1
order_dict['b'] = 2
print order_dict
print order_dict.keys()
dict = {'a':7,'b':3,'c':4,'d':1,'e':8,}
print dict
order_dict = collections.OrderedDict()
order_dict['a'] = 1
order_dict['b'] = 2
print order_dict
print order_dict.keys()