Python: How we can make a higher order function in Python?

Question

How to read/load the cmake file in python and access its elements. I have a scenario, where i need to load the make file and access its elements. I have tried reading the make file as text file and parsing it,but its not the ideal solution. Please let me know how to load the .mk file and access its elements in python.

Answer 1

Functions and methods are first-class objects in Python, so if you want to pass a function to another function, you can just treat it as any other object.

To bind a function object to a specific context, you can use either nested scopes or callable objects. For example, suppose you wanted to define linear(a,b) which returns a function f(x) that computes the value a*x+b.

Using nested scopes:

def linear(a, b):
    def result(x):
        return a*x + b
    return result

Or using a callable object:

class linear:
  def __init__(self, a, b):
           self.a, self.b = a,b
       def __call__(self, x):
           return self.a * x + self.b

In both cases:

taxes = linear(0.3, 2)

gives a callable object where taxes(10e6) == 0.3 * 10e6 + 2.

For More :
https://thenewcircle.com/static/bookshelf/python_fundamentals_tutorial/functional_programming.html