Python 名称错误：名称'；选择'；没有定义

我是一个通过与Tkinter创建一个石头、布、剪刀游戏来学习if语句的人。我正在尝试制作一个标签，如果按下按钮就会出现。例如，如果我按下摇滚按钮，它会贴上一个标签，上面写着“摇滚”。但是我在if语句中遇到了一个问题。这就是我所拥有的

import random
from tkinter import *

click = True

def compick():
    choice = random.choice(["rock","paper","scissors"])
    return choice

compchoice = compick()

def yourChoice(Pick):
    global click

br = Button(gui, image=img1, command= lambda:yourChoice('rock'))
br.place(x=15, y=100)
bp = Button(gui, image=img2, command= lambda:yourChoice('paper'))
bp.place(x=200 ,y=100)
bs = Button(gui, image=img3, command= lambda:yourChoice('scissors'))
bs.place(x=350, y=100)

if click==True:
    if Pick =='rock':
        LR.place(x=225, y=500)
        if compchoice =='rock':
            LR.place(x=225, y=15)

gui.mainloop()

---

它给了我一个错误，说“名称‘Pick’未定义”。我不知道代码出了什么问题。

似乎是缩进错误。将函数

yourChoice

的所有代码放在一个缩进下

大概是这样的：

def yourChoice(Pick):
    global click

    br = Button(gui, image=img1, command= lambda:yourChoice('rock'))
    br.place(x=15, y=100)
    bp = Button(gui, image=img2, command= lambda:yourChoice('paper'))
    bp.place(x=200 ,y=100)
    bs = Button(gui, image=img3, command= lambda:yourChoice('scissors'))
    bs.place(x=350, y=100)

    if click==True:
        if Pick =='rock':
           LR.place(x=225, y=500)
            if compchoice =='rock':
                LR.place(x=225, y=15)

import random
from tkinter import *

click = True

def compick():
    choice = random.choice(["rock","paper","scissors"])
    return choice

compchoice = compick()

def yourChoice(Pick):
    global click
    br = Button(gui, image=img1, command= lambda:yourChoice('rock'))
    br.place(x=15, y=100)
    bp = Button(gui, image=img2, command= lambda:yourChoice('paper'))
    bp.place(x=200 ,y=100)
    bs = Button(gui, image=img3, command= lambda:yourChoice('scissors'))
    bs.place(x=350, y=100)

    if click==True:
        if Pick =='rock':
            LR.place(x=225, y=500)
            if compchoice =='rock':
                LR.place(x=225, y=15)

gui.mainloop()

---

现在，上述所有代码都是在调用

yourChoice

函数时执行的。

Python是为数不多的缩进非常重要的语言之一。您可以尝试在“全局单击”之后调整代码的缩进，以便它们匹配。大概是这样的：

def yourChoice(Pick):
    global click

    br = Button(gui, image=img1, command= lambda:yourChoice('rock'))
    br.place(x=15, y=100)
    bp = Button(gui, image=img2, command= lambda:yourChoice('paper'))
    bp.place(x=200 ,y=100)
    bs = Button(gui, image=img3, command= lambda:yourChoice('scissors'))
    bs.place(x=350, y=100)

    if click==True:
        if Pick =='rock':
           LR.place(x=225, y=500)
            if compchoice =='rock':
                LR.place(x=225, y=15)

import random
from tkinter import *

click = True

def compick():
    choice = random.choice(["rock","paper","scissors"])
    return choice

compchoice = compick()

def yourChoice(Pick):
    global click
    br = Button(gui, image=img1, command= lambda:yourChoice('rock'))
    br.place(x=15, y=100)
    bp = Button(gui, image=img2, command= lambda:yourChoice('paper'))
    bp.place(x=200 ,y=100)
    bs = Button(gui, image=img3, command= lambda:yourChoice('scissors'))
    bs.place(x=350, y=100)

    if click==True:
        if Pick =='rock':
            LR.place(x=225, y=500)
            if compchoice =='rock':
                LR.place(x=225, y=15)

gui.mainloop()

---

缩进函数定义：

def yourChoice(Pick):
    global click

    br = Button(gui, image=img1, command= lambda:yourChoice('rock'))
    br.place(x=15, y=100)
    bp = Button(gui, image=img2, command= lambda:yourChoice('paper'))
    bp.place(x=200 ,y=100)
    bs = Button(gui, image=img3, command= lambda:yourChoice('scissors'))
    bs.place(x=350, y=100)

    if click==True: # <-- Be careful, you set it to True just before ! 
        if Pick =='rock':
            LR.place(x=225, y=500)
            if compchoice =='rock':
                LR.place(x=225, y=15)

---

我猜结尾的if语句应该在

yourChoice

函数的主体中。如果是这种情况，您必须正确地缩进它们，以及前面的行，以便它们成为函数体的一部分。缩进在python中非常重要。您的函数

yourChoice

只包含一行单数。我认为您应该将所有内容都放在函数内部的

yourChoice

（直到

mainloop（）

）之后，因此您必须将其缩进。请至少阅读基础教程-看起来您的脚本中有很多问题，而不是完整的可执行脚本。首先，您应该得到错误“gui”未定义；按钮中的命令定义了错误的函数，可能只是没有。。。