How Can I Call a Python Function Dynamically Using Its Name?

Function Invocation via Dynamic Name Resolution

In Python, there are instances where you may require calling a function using its name stored as a string. This approach offers flexibility and can be useful in various scenarios.

Dynamic Function Invocation

To dynamically invoke a function using its string representation, you can employ the getattr() function. Consider the following example:

import foo

func_name = "bar"
bar = getattr(foo, func_name)
result = bar()  # executes foo.bar()

In this example, we have a module named foo with a function named bar. We store the function's name as a string (func_name) and utilize getattr() to retrieve a reference to the function object. The result variable now contains the return value of the foo.bar() function call.

Applicability of getattr()

It's important to note that getattr() is versatile and can be applied to instance-bound methods, module-level functions, class methods, and more. Its dynamic nature allows for flexible access to methods and functions regardless of their invocation context.

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