进口龟
wn = turtle.screen()
alex = turtle.Turtle()
alex.forward(50)
alex.left(90)
alex.forward(30)
wn.mainloop()
Traceback (most recent call last):
File "</path/to/script>.py", line <number>, in <module>
wn = turtle.screen()
AttributeError: module 'turtle' has no attribute 'screen'
因为turtle库没有属性screen
,但这只是一个小的错字,因为turtle库does具有
Screen
属性。 Python编程语言关心字母的大小写,通常将其描述为区分大小写的语法或case sensitivity。