Is it possible to iterate dictionary in python using next(). (I need to access keys and values). Also would it work for extendable dictionaries with non-fixed length?

CodePudding user response：

Use items to get the pairs key/value and iter() to be able to call next

content = dict(zip(range(10), range(10, 20)))
print(content)  # {0: 10, 1: 11, 2: 12, 3: 13, 4: 14, 5: 15, 6: 16, 7: 17, 8: 18, 9: 19}

iterable = iter(content.items())
print(next(iterable))  # (0, 10)
print(next(iterable))  # (1, 11)
print(next(iterable))  # (2, 12)
print(next(iterable))  # (3, 13)

CodePudding user response：

1. Yes, it is possible to iterate over a dictionary using next (and iter). In fact, this is how iteration works:

   1. Obtain an iterator: __it = iter(your_dict)
   2. Call next(__it) to retrieve the next key

2. Iterating over a dictionary iterates over its keys: list({1: 'hello', 2: 'world'}) == [1, 2]. You should iterate over your_dict.items() to get pairs of keys and values