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Sometimes checking of arguments in Python is necessary. e.g. I have a function which accepts either the address of other node in the network as the raw string address or class Node which encapsulates the other node's information.
I use type() function as in:
if type(n) == type(Node): do this elif type(n) == type(str) do this Is this a good way to do this?
Update 1: Python 3 has annotation for function parameters. These can be used for type checks using tool: http://mypy-lang.org/
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5 Types of Arguments in Python Function Definition:positional arguments. arbitrary positional arguments. arbitrary keyword arguments.
Hence, we conclude that Python Function Arguments and its three types of arguments to functions. These are- default, keyword, and arbitrary arguments.
Python isinstance() Function The isinstance() function returns True if the specified object is of the specified type, otherwise False . If the type parameter is a tuple, this function will return True if the object is one of the types in the tuple.
Python type() is a built-in function that returns the type of the objects/data elements stored in any data type or returns a new type object depending on the arguments passed to the function. The Python type() function prints what type of data structures are used to store the data elements in a program.
Use isinstance(). Sample:
if isinstance(n, unicode): # do this elif isinstance(n, Node): # do that ... If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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