我正在尝试使用向右和向左箭头键旋转图像,但我的代码无效 . 有人可以帮助我做错了吗?

for ev in pygame.event.get():
            degree=5
            while pygame.key.get_pressed()[pygame.K_LEFT] == True:
                screen.blit(pygame.transform.rotate(image, degree), (100,100))
                degree+=5
                sleep(0.01)
                pygame.display.update()

我已经导入了所有模块,如pygame和时间,也完成了 pygame.init() ,也设置了我的屏幕,我只想知道如何用箭头键连续旋转我的图像?有人可以帮忙吗?

My code

这是我的代码,其中包含furas建议的更新 . 鼠标按钮工作,如果我点击K_LEFT图像只旋转一次,如果我点击K_LEFT更多它似乎旋转但我看不到结果(我说这似乎是因为如果我用鼠标去图像和点击在图像上绘制线条并且 then 再次点击K_LEFT所有线条变黑,这意味着pygame会尝试将图像像素绘制到线条像素位置?)

import pygame
import sys
from time import sleep
import random
from pygame.locals import *

# init video system:
pygame.init()

# Definitionen
pygame.mixer.music.load(
    "/home/amir/Music/free-sound/67884__benboncan__lake-waves-2.wav")
bildSchirm = pygame.display.set_mode((800, 800))
bild = pygame.image.load(
    "/home/amir/Documents/python/pygame/plane.png").convert()
pygame.display.set_caption("Shooting")
bild_pos = (400 - 74, 400 - 58)
bildSchirm.blit(bild, bild_pos)
pygame.display.update()
pygame.mixer.music.play(0, 0)


def bewegen(a, b=0):  # der Weg und die Richtung der Kugel
    lst = [pygame.mouse.get_pos()]
    richtungen = [(0, 10), (-10, 0), (10, 0), (0, -10)]
    rnd_richtung = random.choice(richtungen)
    while b < a - 1:
        b += 1
        lst.append((lst[-1][0] + rnd_richtung[0],
                    lst[-1][1] + rnd_richtung[1]))
    return lst


# main_loop
running = True
while running:
    for e in pygame.event.get():
        if e.type == KEYDOWN and e.key == K_q:
            running = False
        elif e.type == MOUSEBUTTONDOWN:
            for x in bewegen(random.randint(1, 50)):
                pygame.draw.rect(bildSchirm, (random.randint(0, 255), random.randint(0, 255), random.randint(0, 255)), Rect(x, (10, 10)), 0)
                sleep(0.002)  # die Geschwindigkeit der Schiesserei
                pygame.display.update()
        elif pygame.key.get_pressed()[pygame.K_LEFT] == True:
            bildSchirm.blit(pygame.transform.rotate(bild, 50), bild_pos)
    pygame.display.update()
pygame.quit()