Traversal a Dictionary

Asked Jul 10 '19 at 20:33

Active Jul 10 '19 at 20:33

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When I practiced the questions in leetcode, I found that there are some differences between Py2 and Py3 in traversing a dictionary. For example, when I run the following codes in Py3, the key and values are printed out one by one as their sequence in the dict1, like (1, 2), (3, 5),(7, 8), (9, 6). However, when I run the same code in dict2, it prints (7, 8) , (1, 2) , (3, 5), (9, 6). Why does this happen? How to print it as their original sequence in Py2? Thanks

dict1 = {1:2, 3: 5, 9: 6, 7: 8}
for each in dict1:
  print(each, dict1[each])

asked Jul 10 '19 at 20:33

Fan Ye

Possible duplicate of [How to keep keys/values in same order as declared?](https://stackoverflow.com/questions/1867861/how-to-keep-keys-values-in-same-order-as-declared) – Tomerikoo Jul 10 '19 at 20:41
Dictionaries prior to 3.7 are un-ordered (prior to 3.6 technically). Now dictionaries are in insertion order. – Error - Syntactical Remorse Jul 11 '19 at 12:26

Traversal a Dictionary

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