What are some examples of type inference in Python?
In Python, type inference allows the interpreter to deduce the type of a variable at runtime. For example, if you write x = 10
, Python infers that x
is an integer.
Can you give me more examples?
Sure! Another example is when you define a function like def add(a, b): return a + b
. Python infers the types of a
and b
based on the arguments passed when the function is called.
What about using type hints?
Type hints in Python, introduced in PEP 484, allow you to specify expected types. For instance, def greet(name: str) -> str:
indicates that name
should be a string and the function returns a string.
Are there any tools to check type inference?
Yes, tools like mypy
can be used to check type hints and ensure type correctness in your Python code.
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