我正在使用Python制作一个基本设备,遇到了以下问题:
File "/home/pi/Adafruit_Python_SSD1306/PyOS_V0.py", line 178, in <module>
gameMenuApp()
File "/home/pi/Adafruit_Python_SSD1306/PyOS_V0.py", line 92, in gameMenuApp
draw.text((0, 32), gameMenuText, font=StartupFinishFont,
UnboundLocalError: local variable 'gameMenuText' referenced before assignment
这没有意义,因为我在文件的开头指定了变量。我还将代码放到python linter中,但没有收到错误。另外,我删除了大部分代码,以使其更易于阅读,所以如果有什么不合理的,不要担心它。我也在Github上发布了代码。https://github.com/raspiuser6969/PyOS
gameMenuText = " "
gameMenuSelect = int(1)
gameMenu = [' Pong ',' RPS ']
gameMenuSelect = int(1)
def pong():
def rps():
def gameMenuApp():
while GPIO.input(A_pin):
draw.rectangle((0,0,128,64), outline=0, fill=0)
draw.text((0,32), gameMenuText, font=StartupFinishFont, fill=255)
disp.image(image)
disp.display()
if not(GPIO.input(D_pin)):
gameMenuSelect = gameMenuSelect + 1
draw.rectangle((0,0,128,64), outline=0, fill=0)
disp.image(image)
disp.display()
print(gameMenuSelect)
if not(GPIO.input(U_pin)):
gameMenuSelect = gameMenuSelect - 1
draw.rectangle((0,0,128,64), outline=0, fill=0)
disp.image(image)
disp.display()
print(gameMenuSelect)
if gameMenuSelect == 1:
gameMenuText = gameMenu[gameMenuSelect - 1]
shutdownApp()
time.sleep(0.1)
if gameMenuSelect == 2:
gameMenuText = gameMenu[gameMenuSelect - 1]
rps()
time.sleep(0.1)
if 2 < gameMenuSelect:
gameMenuSelect = gameMenuSelect - 1
if 1 > gameMenuSelect:
gameMenuSelect = gameMenuSelect + 1
gameMenuText
是在文件中定义的,但不是在函数中定义的。您应该将其作为参数传递:或将其用作全局:
你的其他全局变量也一样,所以我已经添加了它们。你知道吗
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