Question

当我尝试以这种方式返回时，编译器将引发错误。

编译消息Main.java:15：错误：缺少返回语句 } ^ 1错误退出状态1

from tkinter import *
from tkinter.ttk import *

def process_name():
    """Do something with the name (in this case just print it)"""

    global name_entry
    print("Hi {}".format(name.get()))
    

def main():
    """Set up the GUI and run it"""

    global name_entry
    window = Tk()
    
    name_label = Label(window, text='Enter name a name below:')
    name_label.grid(row=0, column=0)
    name_entry = Entry(window)
    name_entry.grid(row=1, column=3)
    button = Button(window, text='Say hello', command=process_name, padding=10)
    button.grid(row=1, column=0, columnspan=2)
 
    window.mainloop()

        
main()

代码的其余部分。

Answer 1

将最后一个 else if 'else if（distanceB == distanceA）'转换为 else ，它应该可以工作

为什么return语句在if语句中不起作用？

1 个答案: