Calling function in inside another function

Question

I am create this function

def volumn(value_side):
 def side(value_side):
 side = value_side+2
 return (side)
 value_area = side(value_side)
 def area(value_area):
 area = value_area*4
 return(area)
 final_result = area(value_area)
 return(final_result)

My question is How If I just want to call side function

I have try with this code volumn(3).side(3) but still error int' object has no attribute 'side'

• chepner: side and area are local variables, not attributes of the return value. You cannot access them outside the function.
• Carsten: I think they are local functions and not variables. But you're right in that they cannot be accessed from outside the function.

Answer 1

You can return the inner functions side and area to access them outside

def volumn():
 def side(value_side):
 side = value_side+2
 return side
 def area(value_area):
 area = value_area*4
 return(area)
 return side, area
side, area = volumn()
side_value = side(3)
print(side_value)
print(area(side_value))

Or you can use a class to encapsulate the functions and attributes

class Volumn:
 def __init__(self, value_side):
 self.value_side = value_side
 def side(self):
 side = self.value_side+2
 return side
 def area(self):
 area = self.side()*4
 return area
v = Volumn(3)
print(v.side())
print(v.area())

The output will be

5
20

Answer 2

You could define these functions in the outer scope to access them.

def side(value_side):
 side = value_side+2
 return (side)
def area(value_area):
 area = value_area*4
 return(area)
def volume(value_side):
 value_area = side(value_side)
 final_result = area(value_area)
 return final_result