Learn Functional Programming in Python/

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Closure Inspection

Closure Inspection

Take a look inside a closure to find out about its free variables and their values.

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Inside a closure

You can look inside a closure to learn the values of its variables. Here is an example of a closure:

Python 3.8
def f(x, a, v): 
  def g(e): 
    print(x, a, v, e) 
  return g 
  
c = f(5, 6, 7) 
c(2)

Python provides methods to inspect an object more deeply. On line 7 in the code above, the function, f, returns the function object, g, which is assigned to variable c. Since the object returned is a closure, it also contains ...