import pygame
import sys
from pygame.locals import *
pygame.init()
screen = pygame.display.set_mode((600,500))
white = 255,255,255
blue = 0,0,200
myfont = pygame.font.Font(None, 60)
textImage = myfont.render("Hello", True, white)#第二个参数是抗锯齿
while True:
    for event in pygame.event.get():#判断事件
        if event.type in (QUIT, KEYDOWN):
            sys.exit()
    screen.fill(blue)
    screen.blit(textImage, (100, 100))
    pygame.display.update()

绘制圆

错误提示，无效语句，多了个逗号

import pygame
import sys
from pygame.locals import *
pygame.init()
screen = pygame.display.set_mode((600,500))
pygame.display.set_caption("Hello world")
white = 255,255,255
blue = 0,0,200
myfont = pygame.font.Font(None, 60)
textImage = myfont.render("Hello", True, white)#第二个参数是抗锯齿
while True:
    for event in pygame.event.get():#判断事件
        if event.type in (QUIT, KEYDOWN):
            sys.exit()
    screen.fill((0,0,200))
    position = 300,250
    color = 255,255,0
    radius = 100
    width = 10
    pygame.draw.circle(screen, color, position, radius, width)
    pygame.display.update()

import pygame
import sys
from pygame.locals import *
pygame.init()
screen = pygame.display.set_mode((600,500))
pygame.display.set_caption("Hello world")
white = 255,255,255
blue = 0,0,200
myfont = pygame.font.Font(None, 60)
textImage = myfont.render("Hello", True, white)#第二个参数是抗锯齿
while True:
    for event in pygame.event.get():#判断事件
        if event.type in (QUIT, KEYDOWN):
            sys.exit()
    screen.fill((0,0,200))
    position = 300,250,100,50#Rect(left,top,width,height)
    color = 255,255,0
    width = 10
    pygame.draw.rect(screen, color, position, width)
    pygame.display.update()

画线

import pygame
import sys
from pygame.locals import *
pygame.init()
screen = pygame.display.set_mode((600,500))
pygame.display.set_caption("Hello world")
white = 255,255,255
blue = 0,0,200
myfont = pygame.font.Font(None, 60)
textImage = myfont.render("Hello", True, white)#第二个参数是抗锯齿
while True:
    for event in pygame.event.get():#判断事件
        if event.type in (QUIT, KEYDOWN):
            sys.exit()
    screen.fill((0,0,200))
    position = 300,250,100,50#Rect(left,top,width,height)
    color = 255,255,0
    width = 5
    pygame.draw.line(screen, color, (100,100), (500,400), width)
    pygame.draw.rect(screen, color, position, width)
    pygame.display.update()

import pygame
import sys
import math
from pygame.locals import *
pygame.init()
screen = pygame.display.set_mode((600,500))
pygame.display.set_caption("Hello world")
white = 255,255,255
blue = 0,0,200
myfont = pygame.font.Font(None, 60)
textImage = myfont.render("Hello", True, white)#第二个参数是抗锯齿
while True:
    for event in pygame.event.get():#判断事件
        if event.type in (QUIT, KEYDOWN):
            sys.exit()
    screen.fill((0,0,200))
    position = 300,250,100,100#(left,top,width,height)
    color = 255,255,0
    width = 5
    start_angle = math.radians(0)#将度转化为弧度
    end_angle = math.radians(180)
    pygame.draw.arc(screen, color, position, start_angle, end_angle, width)
    pygame.display.update()