how to initialize dict in python
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certainly! in python, a dictionary is a mutable and unordered collection of key-value pairs. initializing a dictionary involves creating an empty one and then populating it with key-value pairs. here's a step-by-step tutorial on how to initialize a dictionary in python with code examples:
to create an empty dictionary, you can use curly braces {}.
you can initialize a dictionary with predefined key-value pairs using the {key: value} syntax.
another way to initialize a dictionary is by using the dict() constructor and passing key-value pairs as arguments.
you can use dictionary comprehension to create a dictionary based on an expression.
you can create a new dictionary by copying an existing one using the copy() method or the dict() constructor.
you can initialize a dictionary with default values using the fromkeys() method.
in python 3.9 and above, you can use the | operator to merge dictionaries.
these examples cover various methods of initializing dictionaries in python. choose the one that best fits your use case. remember that dictionaries are versatile and widely used data structures in python.
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