Python 如何从tkinter按钮执行的函数返回值？

刚开始学习Python。 我创建了一个文件，其中包含一个具有tkinter功能的类

例如：

file1.py:

import tkinter as tk
import pandas as pd
import os
class flt:
    def func(var):
        var['file'] = pd.read_excel(os.getcwd()+'\\xyz.xlsx')
        if var[ch].get()==1:
            var['file'] = "Filter this file accordingly"   # Example
        if var[hc].get()==1:
            var['file'] = "filter this file accordingly"   #Example
        return var['file']     #I want this value in file2.py
    def do_something(var):
        root = var['root']
        mainframe = var['mainframe']
        var[ch] = IntVar()
        var[hc] = IntVar()
        ch1 = Checkbutton(mainframe, text='Filter by ABC',variable=var[ch])
        ch2 = Checkbutton(mainframe, text='Filter by 123', variable=var[ch])
        ch1.place(relx=0.4, rely=0.2)
        ch2.place(relx=0.4, rely=0.3)
        bt = tk.Button(mainframe, text='submit', command=lambda: flt.func(var))
        bt.place(relx=0.5, rely=0.5)

import tkinter as tk
root = tk.Tk()
mainframe = tk.Frame(root, relief='raised')
mainframe.place(relx=0.1, rely=0.1, width='1100', height='380')
val = {}
val['root'] = root
val['mainframe'] = mainframe
def chk:
    import file1
    value = file1.do_something(val)
    print(value)
btn = tk.Button(mainframe, text='Check', command = chk)
btn.place(relx=0.5, rely=0.8)
root.mainloop()

#creating a class
class person:
    def __init__ f1(self,x):# this function will be called everytime when the class is called
        self.value=x

import file1    #importing the file (file name)
x=file1.person(10)#calling the class from file1 (parameter given as 10)
print(x.value)  #printing the value.

import tkinter as tk
class flt:
    def __init__(self,x):
        self.value = x*x

    def do_something(self,var):
        #some stuff

import file1
import tkinter as tk

#basic tkinter window code

trial=file1.flt('value')
test=trial.value #here you store the value of file1

def chk:
    value = file1.do_something(val)
    print(value)
btn = tk.Button(mainframe, text='Check', command = chk)
btn.place(relx=0.5, rely=0.8)
root.mainloop()

另一个文件是file2.py:

import tkinter as tk
import pandas as pd
import os
class flt:
    def func(var):
        var['file'] = pd.read_excel(os.getcwd()+'\\xyz.xlsx')
        if var[ch].get()==1:
            var['file'] = "Filter this file accordingly"   # Example
        if var[hc].get()==1:
            var['file'] = "filter this file accordingly"   #Example
        return var['file']     #I want this value in file2.py
    def do_something(var):
        root = var['root']
        mainframe = var['mainframe']
        var[ch] = IntVar()
        var[hc] = IntVar()
        ch1 = Checkbutton(mainframe, text='Filter by ABC',variable=var[ch])
        ch2 = Checkbutton(mainframe, text='Filter by 123', variable=var[ch])
        ch1.place(relx=0.4, rely=0.2)
        ch2.place(relx=0.4, rely=0.3)
        bt = tk.Button(mainframe, text='submit', command=lambda: flt.func(var))
        bt.place(relx=0.5, rely=0.5)

import tkinter as tk
root = tk.Tk()
mainframe = tk.Frame(root, relief='raised')
mainframe.place(relx=0.1, rely=0.1, width='1100', height='380')
val = {}
val['root'] = root
val['mainframe'] = mainframe
def chk:
    import file1
    value = file1.do_something(val)
    print(value)
btn = tk.Button(mainframe, text='Check', command = chk)
btn.place(relx=0.5, rely=0.8)
root.mainloop()

#creating a class
class person:
    def __init__ f1(self,x):# this function will be called everytime when the class is called
        self.value=x

import file1    #importing the file (file name)
x=file1.person(10)#calling the class from file1 (parameter given as 10)
print(x.value)  #printing the value.

import tkinter as tk
class flt:
    def __init__(self,x):
        self.value = x*x

    def do_something(self,var):
        #some stuff

import file1
import tkinter as tk

#basic tkinter window code

trial=file1.flt('value')
test=trial.value #here you store the value of file1

def chk:
    value = file1.do_something(val)
    print(value)
btn = tk.Button(mainframe, text='Check', command = chk)
btn.place(relx=0.5, rely=0.8)
root.mainloop()

我想要file2.py中的值“var['file']”（来自func（var）>file1.py）

---

每一个答案都很感激。谢谢。

首先，您必须创建相应的类，然后导入文件

文件1:

import tkinter as tk
import pandas as pd
import os
class flt:
    def func(var):
        var['file'] = pd.read_excel(os.getcwd()+'\\xyz.xlsx')
        if var[ch].get()==1:
            var['file'] = "Filter this file accordingly"   # Example
        if var[hc].get()==1:
            var['file'] = "filter this file accordingly"   #Example
        return var['file']     #I want this value in file2.py
    def do_something(var):
        root = var['root']
        mainframe = var['mainframe']
        var[ch] = IntVar()
        var[hc] = IntVar()
        ch1 = Checkbutton(mainframe, text='Filter by ABC',variable=var[ch])
        ch2 = Checkbutton(mainframe, text='Filter by 123', variable=var[ch])
        ch1.place(relx=0.4, rely=0.2)
        ch2.place(relx=0.4, rely=0.3)
        bt = tk.Button(mainframe, text='submit', command=lambda: flt.func(var))
        bt.place(relx=0.5, rely=0.5)

import tkinter as tk
root = tk.Tk()
mainframe = tk.Frame(root, relief='raised')
mainframe.place(relx=0.1, rely=0.1, width='1100', height='380')
val = {}
val['root'] = root
val['mainframe'] = mainframe
def chk:
    import file1
    value = file1.do_something(val)
    print(value)
btn = tk.Button(mainframe, text='Check', command = chk)
btn.place(relx=0.5, rely=0.8)
root.mainloop()

#creating a class
class person:
    def __init__ f1(self,x):# this function will be called everytime when the class is called
        self.value=x

import file1    #importing the file (file name)
x=file1.person(10)#calling the class from file1 (parameter given as 10)
print(x.value)  #printing the value.

import tkinter as tk
class flt:
    def __init__(self,x):
        self.value = x*x

    def do_something(self,var):
        #some stuff

import file1
import tkinter as tk

#basic tkinter window code

trial=file1.flt('value')
test=trial.value #here you store the value of file1

def chk:
    value = file1.do_something(val)
    print(value)
btn = tk.Button(mainframe, text='Check', command = chk)
btn.place(relx=0.5, rely=0.8)
root.mainloop()

文件2:

import tkinter as tk
import pandas as pd
import os
class flt:
    def func(var):
        var['file'] = pd.read_excel(os.getcwd()+'\\xyz.xlsx')
        if var[ch].get()==1:
            var['file'] = "Filter this file accordingly"   # Example
        if var[hc].get()==1:
            var['file'] = "filter this file accordingly"   #Example
        return var['file']     #I want this value in file2.py
    def do_something(var):
        root = var['root']
        mainframe = var['mainframe']
        var[ch] = IntVar()
        var[hc] = IntVar()
        ch1 = Checkbutton(mainframe, text='Filter by ABC',variable=var[ch])
        ch2 = Checkbutton(mainframe, text='Filter by 123', variable=var[ch])
        ch1.place(relx=0.4, rely=0.2)
        ch2.place(relx=0.4, rely=0.3)
        bt = tk.Button(mainframe, text='submit', command=lambda: flt.func(var))
        bt.place(relx=0.5, rely=0.5)

import tkinter as tk
root = tk.Tk()
mainframe = tk.Frame(root, relief='raised')
mainframe.place(relx=0.1, rely=0.1, width='1100', height='380')
val = {}
val['root'] = root
val['mainframe'] = mainframe
def chk:
    import file1
    value = file1.do_something(val)
    print(value)
btn = tk.Button(mainframe, text='Check', command = chk)
btn.place(relx=0.5, rely=0.8)
root.mainloop()

#creating a class
class person:
    def __init__ f1(self,x):# this function will be called everytime when the class is called
        self.value=x

import file1    #importing the file (file name)
x=file1.person(10)#calling the class from file1 (parameter given as 10)
print(x.value)  #printing the value.

import tkinter as tk
class flt:
    def __init__(self,x):
        self.value = x*x

    def do_something(self,var):
        #some stuff

import file1
import tkinter as tk

#basic tkinter window code

trial=file1.flt('value')
test=trial.value #here you store the value of file1

def chk:
    value = file1.do_something(val)
    print(value)
btn = tk.Button(mainframe, text='Check', command = chk)
btn.place(relx=0.5, rely=0.8)
root.mainloop()

---

就你而言：

文件1:

import tkinter as tk
import pandas as pd
import os
class flt:
    def func(var):
        var['file'] = pd.read_excel(os.getcwd()+'\\xyz.xlsx')
        if var[ch].get()==1:
            var['file'] = "Filter this file accordingly"   # Example
        if var[hc].get()==1:
            var['file'] = "filter this file accordingly"   #Example
        return var['file']     #I want this value in file2.py
    def do_something(var):
        root = var['root']
        mainframe = var['mainframe']
        var[ch] = IntVar()
        var[hc] = IntVar()
        ch1 = Checkbutton(mainframe, text='Filter by ABC',variable=var[ch])
        ch2 = Checkbutton(mainframe, text='Filter by 123', variable=var[ch])
        ch1.place(relx=0.4, rely=0.2)
        ch2.place(relx=0.4, rely=0.3)
        bt = tk.Button(mainframe, text='submit', command=lambda: flt.func(var))
        bt.place(relx=0.5, rely=0.5)

import tkinter as tk
root = tk.Tk()
mainframe = tk.Frame(root, relief='raised')
mainframe.place(relx=0.1, rely=0.1, width='1100', height='380')
val = {}
val['root'] = root
val['mainframe'] = mainframe
def chk:
    import file1
    value = file1.do_something(val)
    print(value)
btn = tk.Button(mainframe, text='Check', command = chk)
btn.place(relx=0.5, rely=0.8)
root.mainloop()

#creating a class
class person:
    def __init__ f1(self,x):# this function will be called everytime when the class is called
        self.value=x

import file1    #importing the file (file name)
x=file1.person(10)#calling the class from file1 (parameter given as 10)
print(x.value)  #printing the value.

import tkinter as tk
class flt:
    def __init__(self,x):
        self.value = x*x

    def do_something(self,var):
        #some stuff

import file1
import tkinter as tk

#basic tkinter window code

trial=file1.flt('value')
test=trial.value #here you store the value of file1

def chk:
    value = file1.do_something(val)
    print(value)
btn = tk.Button(mainframe, text='Check', command = chk)
btn.place(relx=0.5, rely=0.8)
root.mainloop()

文件2:

import tkinter as tk
import pandas as pd
import os
class flt:
    def func(var):
        var['file'] = pd.read_excel(os.getcwd()+'\\xyz.xlsx')
        if var[ch].get()==1:
            var['file'] = "Filter this file accordingly"   # Example
        if var[hc].get()==1:
            var['file'] = "filter this file accordingly"   #Example
        return var['file']     #I want this value in file2.py
    def do_something(var):
        root = var['root']
        mainframe = var['mainframe']
        var[ch] = IntVar()
        var[hc] = IntVar()
        ch1 = Checkbutton(mainframe, text='Filter by ABC',variable=var[ch])
        ch2 = Checkbutton(mainframe, text='Filter by 123', variable=var[ch])
        ch1.place(relx=0.4, rely=0.2)
        ch2.place(relx=0.4, rely=0.3)
        bt = tk.Button(mainframe, text='submit', command=lambda: flt.func(var))
        bt.place(relx=0.5, rely=0.5)

import tkinter as tk
root = tk.Tk()
mainframe = tk.Frame(root, relief='raised')
mainframe.place(relx=0.1, rely=0.1, width='1100', height='380')
val = {}
val['root'] = root
val['mainframe'] = mainframe
def chk:
    import file1
    value = file1.do_something(val)
    print(value)
btn = tk.Button(mainframe, text='Check', command = chk)
btn.place(relx=0.5, rely=0.8)
root.mainloop()

#creating a class
class person:
    def __init__ f1(self,x):# this function will be called everytime when the class is called
        self.value=x

import file1    #importing the file (file name)
x=file1.person(10)#calling the class from file1 (parameter given as 10)
print(x.value)  #printing the value.

import tkinter as tk
class flt:
    def __init__(self,x):
        self.value = x*x

    def do_something(self,var):
        #some stuff

import file1
import tkinter as tk

#basic tkinter window code

trial=file1.flt('value')
test=trial.value #here you store the value of file1

def chk:
    value = file1.do_something(val)
    print(value)
btn = tk.Button(mainframe, text='Check', command = chk)
btn.place(relx=0.5, rely=0.8)
root.mainloop()

---

你让你的代码变得越来越复杂，我还是不明白你想要什么

因此，我制作了这个最小的程序，以显示当出现一个新按钮，用户按下该按钮时，会计算一个值，并在从另一个模块调用任意函数时使用该值： file1.py

将tkinter作为tk导入
def func（变量）：
var['file']=42
返回var['file']
def do_某事（变量，f）：
#root=var['root']
mainframe=var['mainframe']
bt=tk.Button（大型机，text='submit'，command=lambda:f（func（var）））
#当用户按下submit时，函数f被调用为“return”值
bt.place（relx=0.5，rely=0.5）

file2.py

将tkinter作为tk导入
root=tk.tk（）
mainframe=tk.Frame（根，relief='raised'）
mainframe.place（relx=0.1，rely=0.1，width='1100'，height='380'）
val={}
val['root']=根
val['mainframe']=大型机
def f（值）：
打印（值）#只打印值，但可以做任何事情！
def chk（）：
导入文件1
file1.do_something（val，f）#f作为回调从这里传递
#注意-无返回值
btn=tk.按钮（大型机，text='Check'，command=chk）
基站位置（relx=0.5，rely=0.8）
root.mainloop（）

---

注意：框架开始时很小，您需要拖动它以将其调整到更大的大小，才能看到按钮。

在您的

file2.py

中，像导入

一样从file2导入flt

。确保两个文件位于同一位置您的代码充满错误。您应该使用完整的错误回溯或更正的代码来更新您的问题。@Epsi95两个文件位于同一位置，是的，我确实使用了导入，如从文件1导入flt导入

，但上面的代码就是一个示例。谢谢你的建议。@quamrana原始代码有100行。在这段代码中，我同意可能有很多错误，但我的问题是，当从tkinter按钮调用时，有没有办法从文件中的另一个类获取值？谢谢您阅读您提供的代码行之间的内容，用户可以按
submit
按钮。所以，当他们这样做（执行
flt.func（）
）时，您希望在
file1.py
中发生什么？是的，但对我来说更复杂。但这解决了我的问题，非常感谢夸姆拉纳