Question

我一直在玩tkinter一点点，我发现你必须使用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，但我真的不想制作13种非常类似的方法。我试过做一个嵌套的def方法（我之前从未真正做过），但是，从我尝试过的方法来看，它不会起作用。我只是做错了还是不可能。如果不可能的话，除了大量的复制和大量粘贴之外，还有其他方法可以批量生产def方法吗？这是代码：

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)
# ...

这应该在功能上与您上面的[number] b功能完全相同。

你能用def方法为Python制作更多的def方法

1 个答案: