Here is how to call a function of a module by using its name in Python.

import math

# Suppose we have a module called "math" with a function called "sqrt"
# We don't know the name of the function in advance, so we use a variable to store it
func_name = "sqrt"

# Use getattr to retrieve the function from the module
func = getattr(math, func_name)

# Call the function
result = func(4)
print(result)  # Output: 2.0 

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To call a function of a module by using its name in Python, you can use the getattr function.

Alternatively, you can also use the globals() function to retrieve the function from the global namespace. Here is an example of how to do this:

import math

# Suppose we have a module called "math" with a function called "sqrt"
# We don't know the name of the function in advance, so we use a variable to store it
func_name = "sqrt"

# Use globals() to retrieve the function from the global namespace
func = globals()[func_name]

# Call the function
result = func(4)
print(result)  # Output: 2.0

*Note that in both cases, you will need to import the module that contains the function you want to call.

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