How to check if a key exists in a dictionary in python
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to check if a key exists in a dictionary in python, you can use the `in` keyword or the `get()` method. here is a tutorial on how to do it with code examples:
1. using the `in` keyword:
you can use the `in` keyword to check if a key exists in a dictionary. the `in` keyword returns `true` if the key is present in the dictionary, otherwise it returns `false`.
2. using the `get()` method:
you can also use the `get()` method to check if a key exists in a dictionary. the `get()` method returns the value associated with the key if the key is present, otherwise it returns `none`.
these are two common ways to check if a key exists in a dictionary in python. choose the method that best suits your needs based on whether you need to know the existence of the key or retrieve its value.
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