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Let's say I have an associative array like so: {'key1': 22, 'key2': 42}.
How can I check if key1 exists in the dictionary?
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In this article, we will find out whether a dictionary has duplicate keys or not in Python. The straight answer is NO. You can not have duplicate keys in a dictionary in Python.
How do you check if a key exists or not in a dictionary? You can check if a key exists or not in a dictionary using if-in statement/in operator, get(), keys(), handling 'KeyError' exception, and in versions older than Python 3, using has_key(). 2.
[C#] Dictionary with duplicate keysThe Key value of a Dictionary is unique and doesn't let you add a duplicate key entry.
if key in array: # do something Associative arrays are called dictionaries in Python and you can learn more about them in the stdtypes documentation.
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