[Python3][Resolved] NameError: name 'say' is not defined

 Error message

C:\python\ipython\Tutorials\ Eduonix\exercises>C:\Users\xxxx\AppData\Local\P
rograms\Python\Python36-32\python man.py
Traceback (most recent call last):
  File "man.py", line 31, in <module>
    male = Male()
  File "man.py", line 5, in __init__
    say(self.type)
NameError: name 'say' is not defined

Source Code

class Human():
    def __init__(self):
        self.type = "human"
        say(self.type)
    def sleep(self):
        pass
    def eat(self,food):
        print("I eat "+food)
    def excrete(self):
        pass
    def say(self, type):
        print("I am a "+type)
       
class Male(Human):
    sex_chromosomes = "XY"
   
class Man(Male):
    age = "elder"
    def say(self):
        say("male")
    def say(self):
        say("male")

male = Male()

Correction 

The __init__ method is roughly what represents a constructor in Python and the self variable represents the instance of the object itself., If you want call the method within the class, you need to add the keyword self:

class Human():
    def __init__(self):
        self.type = "human"
        self.say(self.type)
    def sleep(self):
        pass
    def eat(self,food):
        print("I eat "+food)
    def excrete(self):
        pass
    def say(self, type):
        print("I am a "+type)
       
class Male(Human):
    sex_chromosomes = "XY"
   
class Man(Male):
    age = "elder"
    def say(self):
        say("male")
    def say(self):
        say("male")

male = Male()