Creating a new dictionary in Python - Stack Overflow I want to build a dictionary in Python However, all the examples that I see are instantiating a dictionary from a list, etc How do I create a new empty dictionary in Python?
How can I remove a key from a Python dictionary? See Delete an element from a dictionary for more general approaches to the problem of removing a key from a dict (including ones which produce a modified copy)
python - Check if a given key already exists in a dictionary - Stack . . . A common use for checking the existence of a key in a dictionary before mutating it is to default-initialize the value (e g if your values are lists, for example, and you want to ensure that there is an empty list to which you can append when inserting the first value for a key)