Which one of the following is correct?In python, a dictionary can have two same keys with different valuesIn python, a dictionary can have two same values with different keysIn python, a dictionary can have two same keys or same values but cannot have two same key-value pairIn python, a dictionary can neither have two same keys nor two same values
Question
Which one of the following is correct?In python, a dictionary can have two same keys with different valuesIn python, a dictionary can have two same values with different keysIn python, a dictionary can have two same keys or same values but cannot have two same key-value pairIn python, a dictionary can neither have two same keys nor two same values
Solution 1
The correct statement is: "In python, a dictionary can have two same values with different keys".
In Python, a dictionary is a collection which is unordered, changeable and indexed. In Python dictionaries are written with curly brackets, and they have keys and values.
Here is why the other options are incorrect:
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"In python, a dictionary can have two same keys with different values": This is incorrect because in Python dictionaries, keys are unique. If you try to assign a value to an existing key, it will simply update the value for that key, not create a new key-value pair.
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"In python, a dictionary can have two same keys or same values but cannot have two same key-value pair": This is incorrect because, as mentioned above, keys must be unique in Python dictionaries. However, having the same value for different keys is allowed.
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"In python, a dictionary can neither have two same keys nor two same values": This is incorrect because while it's true that a dictionary can't have two same keys, it can have two same values.
Solution 2
The correct statement is: "In python, a dictionary can have two same values with different keys".
Here's why:
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In Python, a dictionary cannot have two same keys with different values. This is because keys in a dictionary are unique. If you try to assign a value to an existing key, it will simply update the value for that key, not create a new key-value pair.
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In Python, a dictionary can have two same values with different keys. This is because while keys are unique, values do not have to be. Different keys can have the same value.
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In Python, a dictionary can have two same keys or same values but cannot have two same key-value pair. This statement is incorrect. As mentioned before, a dictionary cannot have two same keys. It can have two same values, but it can also have two same key-value pairs. If the keys are different, they can have the same value.
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In Python, a dictionary can neither have two same keys nor two same values. This statement is incorrect. A dictionary can have two or more same values, but it cannot have two same keys.
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