What is the difference between handwritten code and pasted code?

Question

Python

I welcome everyone! I immediately apologize for a possibly stupid question, but I do not understand what is going wrong.

And so, watching a couple of videos on YouTube, I write code by analogy as the author of the video does, in the intermediate result he launches the program and it works in his video, but mine throws an error.

Having opened a new Python script in the second window, I pasted part of his code, which he will post on github - as a result, it works. And mine is exactly the same, which I wrote with my hands, throws an error.
What's the real deal?

My code:

import pygame as pg
import pymunk.pygame_util
pymunk.pygame_util.positive_y_is_up = False

DISP = WIDTH, HEIGHT = 600, 600
FPS = 60

pg.init()
display = pg.display.set_mode(DISP)
clock = pg.time.Clock()
draw_options = pymunk.pygame_util.DrawOptions(display)

# Пространство
space = pymunk.Space
space.gravity = 0, 2000

# Динамический объект мяч
ball_mass = 1
ball_radius = 20
ball_moment = pymunk.moment_for_circle(ball_mass, 0, ball_radius)
ball_body = pymunk.Body(ball_mass, ball_moment)
ball_body.position = WIDTH // 2, 0
ball_snape = pymunk.Circle(ball_body, ball_radius)
space.add(ball_body, ball_snape)

while True:
    display.fill(pg.Color('black'))

    for i in pg.event.get():
        if i.type == pg.QUIT:
            exit()

    space.step(1 / FPS)
    space.debug_draw(draw_options)


    pg.display.flip()
    clock.tick(FPS)

Code copied from github:

import pygame as pg
import pymunk.pygame_util
pymunk.pygame_util.positive_y_is_up = False

RES = WIDTH, HEIGHT = 1200, 1000
FPS = 60

pg.init()
surface = pg.display.set_mode(RES)
clock = pg.time.Clock()
draw_options = pymunk.pygame_util.DrawOptions(surface)

space = pymunk.Space()
space.gravity = 0, 8000


ball_mass = 1
ball_radius = 20
ball_moment = pymunk.moment_for_circle(ball_mass, 0, ball_radius)
ball_body = pymunk.Body(ball_mass, ball_moment)
ball_body.position = WIDTH // 2, 0
ball_snape = pymunk.Circle(ball_body, ball_radius)
space.add(ball_body, ball_snape)


while True:
    surface.fill(pg.Color('black'))

    for i in pg.event.get():
        if i.type == pg.QUIT:
            exit()

    space.step(1 / FPS)
    space.debug_draw(draw_options)


    pg.display.flip()
    clock.tick(FPS)

Screenshot from PyCharm showing number of errors

The error that PyCharm throws with my code

Answer 1

diff

Answer 2

Try creating a new project, and copy your code (that you wrote by hand) and paste it into the new project

Answer 3

I made a mistake on line 14. And checking 100 times - did not notice her. As soon as I posted the question, I immediately noticed :( The
question was actually resolved. I apologize and good mood to everyone! ;)