你可以做一个def方法，为Python创建更多的def方法

Question

我一直在玩tkinter一点，我发现你必须做一个def方法来使用按钮。所以我想制作13个按钮，因为我想制作一个计算器，但我实际上不想制作13种非常相似的def方法。我试着做一个嵌套的def方法（我从来没有真正做过），但是，从我试过的，它不会工作。我只是做错了，或者仅仅是不可能的。如果不可能，除了大量的副本和大量的粘贴之外，还有其他方式可以大量生成def方法吗？代码如下：

from tkinter import * 
window=Tk() 


window.geometry("500x500") 
print("Restarting") 
user="" 
def oneb(): 
    global user 
    print("1",end="") 
    user+="1" 
def twob(): 
    global user 
    user+="2" 
    print("2",end="") 
def threeb(): 
    global user 
    user+="3" 
    print("3",end="") 
def fourb(): 
    global user 
    user+="4" 
    print("4",end="") 
def fiveb(): 
    global user 
    user+="5" 
    print("5",end="") 
def sixb(): 
    global user 
    user+="6" 
    print("6",end="") 
def sevenb(): 
    global user 
    user+="7" 
    print("7",end="") 
def eightb(): 
    global user 
    user+="8" 
    print("8",end="") 
def nineb(): 
    global user 
    user+="9" 
    print("9",end="") 
def zerob(): 
    global user 
    user+="0" 
    print("0",end="") 
def plusb(): 
    global user 
    user+="+" 
    print("+",end="") 
def minusb(): 
    global user 
    print("-",end = "") 
def equalb(): 
    global user 
    if "+" in user: 
     user=user.partition("+") 
     symbol="+" 
    elif "-" in user: 
     user=user.partition("-") 
     symbol="-" 
    else: 
     print("=",user) 
    num1=user[0] 
    num2=user[2] 
    num1=int(num1) 
    num2=int(num2) 
    if symbol=="+": 
     answer=num1+num2 
    else: 
     answer=num1-num2 
    answer=str(answer) 
    print("="+answer) 


heightb=5 
widthb=10 

#I know here I probably should've just made a def method. 
one=Button(window, text="1",command=oneb,height=heightb,width=widthb) 
one.grid(row=1,column=1) 

two=Button(window, text="2",command=twob,height=heightb,width=widthb) 
two.grid(row=1,column=2) 

three=Button(window, text="3",command=threeb,height=heightb,width=widthb) 
three.grid(row=1,column=3) 

four=Button(window, text="4",command=fourb,height=heightb,width=widthb) 
four.grid(row=2,column=1) 

five=Button(window, text="5",command=fiveb,height=heightb,width=widthb) 
five.grid(row=2,column=2) 

six=Button(window, text="6",command=sixb,height=heightb,width=widthb) 
six.grid(row=2,column=3) 

seven=Button(window, text="7",command=sevenb,height=heightb,width=widthb) 
seven.grid(row=3,column=1) 

eight=Button(window, text="8",command=eightb,height=heightb,width=widthb) 
eight.grid(row=3,column=2) 

nine=Button(window, text="9",command=nineb,height=heightb,width=widthb) 
nine.grid(row=3,column=3) 

zero=Button(window, text="0",command=zerob,height=heightb,width=widthb) 
zero.grid(row=4,column=2) 

plus=Button(window, text="+", command=plusb,height=heightb, width=widthb) 
plus.grid(row=2,column=4) 

minus=Button(window,text="-", command=minusb,height=heightb, width=widthb) 
minus.grid(row=1,column=4) 

equal=Button(window,text="=", command=equalb,height=heightb, width=widthb) 
equal.grid(row=3,column=4) 



mainloop() 
#button location var.grid(row=x,column=x) 

Answer 1

您可以创建一个返回函数的函数。

例如，

def build_button(number): 
    def button(): 
     global user 
     user += str(number) 
     print(number, end="") 
    return button 

oneb = build_button(1) 
twob = build_button(2) 
# ... 

这应该是功能上等同于你有上述[数字] B类函数。