__init__() missing 1 required positional argument: 'name'

Question

import pygame
from pygame.locals import *

pygame.init()

class levelClass(object):
    def __init__(self, name):
        self.name = name

this init name of window

def makeWindow(self):
    screen = pygame.display.set_mode((800,800))
    pygame.display.set_caption(self.name)

def drawName(self):
    myfont = pygame.font.SysFont("monospace", 25)
    label = myfont.render(self.name, 1, (255,0,0))
    screen.blit(label, (400,400))

level = levelClass('Level 0')
while True:
    level.__init__()
    level.drawName()
    level.makeWindow()
    for event in pygame.event:
        if event.type == QUIT:
            pygame.exit()
            sys.close()
    pygame.display.update()

this will create a window with name Level 0 and write this on window, but i see this error: init() missing 1 required positional argument: 'name'

Answer 1

You don't need to call __init__(...) explicitly, when you create the object:

level = levelClass('Level 0')

it implicitly calls __init__(...) with the argument "Level 0", so you don't need to do it in the while loop.

The __init__ method is roughly what represents a constructor in Python, so it is supposed to be executed just one time, when you create the object.

Edit: In conclusion, you must not call __init__(), when you create the object:

level = levelClass('Level 0')

it is called implicitly, so to correct your problem, delete this line:

level.__init__()

Answer 2

levelClass.__init__ is defined like this:

def __init__(self, name):

so it requires a name argument.

So either eliminate the call to

level.__init__()

(why do you need it anyway?) or change

level.__init__()

to

level.__init__(name)

for some value of name. You would use this only if you wished to change level.name with each iteration of the while-loop. This might be useful if there was more stuff going on in the __init__ method than just setting

self.name = name

-- for example, if __init__ were loading a different map for each level. If all that __init__ is doing is setting the name, then you don't need to call __init__ to change the name attribute; you could just set it directly:

level.name = somename

---

PS. When an instance (e.g. level) calls the method __init__ like this:

level.__init__(somename)

Python calls

levelClass.__init__(level, somename)

Thus self is set to the value level, and name is set to somename.