在PythonGUI計算器上顯示函式的輸出

我創建了一個 GUI 計算器，并希望包含一個附加功能“遺囑認證”。GUI 的普通標準計算器部分作業正常，但是當我嘗試包含特殊功能并單擊 GUI 中的遺囑認證按鈕時，沒有任何反應。部分計算器的代碼如下所示。我已經排除了計算器的許多數字和運算子。

from tkinter import *
def click(num):
    global op
    op=op str(num)
    iptext.set(op)
def evaluate():
    global op
    output = str(eval(op))
    iptext.set(output)

def clearDisplay():
    global op
    op=""
    iptext.set(op)

def probate(op):

    # global probate_fee
    VALUE_CATEGORY1 = 10000
    VALUE_CATEGORY2 = 250000
    RATE_CATEGORY1 = 0.05
    RATE_CATEGORY2 = 0.03
    RATE_CATEGORY3 = 0.01
    estate_worth=op

    if (estate_worth) < 0:
        # is_on = False
        print("Invalid Enrty")
    else:
        if (estate_worth <= VALUE_CATEGORY1):
            probate_fee = 500
        elif ((estate_worth > VALUE_CATEGORY1) & (estate_worth <= VALUE_CATEGORY2)):
            probate_fee = (estate_worth - VALUE_CATEGORY1) * RATE_CATEGORY2   VALUE_CATEGORY1 * RATE_CATEGORY1
        elif (estate_worth > VALUE_CATEGORY2):
            probate_fee = (estate_worth - VALUE_CATEGORY2) * RATE_CATEGORY3   (
                        (VALUE_CATEGORY2 - VALUE_CATEGORY1) * RATE_CATEGORY2)   VALUE_CATEGORY1 * RATE_CATEGORY1
        else:
            print("Invalid Entry")
    return str(probate_fee)

calc=Tk()
calc.title("GUI Calculator")
op=""
iptext=StringVar()
iparea=Entry(calc,font=('large,_font',15,'bold'),bd=10,justify="right",insertwidth=4,textvariable=iptext).grid(columnspan=10)
bt7=Button(calc,font=('arial',15,'bold'),command=lambda:click(7),bg="lavender",text="7",bd=5,padx=15,pady=10).grid(row=1,column=0)
bt8=Button(calc,font=('arial',15,'bold'),command=lambda:click(8),bg="lavender",text="8",bd=5,padx=15,pady=10).grid(row=1,column=1)
bt9=Button(calc,font=('arial',15,'bold'),command=lambda:click(9),bg="lavender",text="9",bd=5,padx=15,pady=10).grid(row=1,column=2)
add=Button(calc,font=('arial',15,'bold'),command=lambda:click(' '),bg="lavender",text=" ",bd=5,padx=15,pady=10).grid(row=1,column=3)
eql=Button(calc,font=('arial',15,'bold'),command=evaluate,bg="lavender",text="=",bd=5,padx=15,pady=10).grid(row=4,column=2)
div=Button(calc,font=('arial',15,'bold'),command=lambda:click('/'),bg="lavender",text="/",bd=5,padx=15,pady=10).grid(row=4,column=3)
btC=Button(calc,font=('arial',15,'bold'),command=clearDisplay,bg="lavender",text="C",bd=5,padx=15,pady=10).grid(row=4,column=1)
btprobate = Button(calc, font=('arial', 15, 'bold'), command=lambda: evaluate, bg="lavender", text="probate", bd=5, padx=0,
                 pady=10).grid(columnspan=10)

calc.mainloop(),

uj5u.com熱心網友回復：

沒有任何反應的原因是您需要在 btprobate 的函式名稱后包含“()”。例如：

btprobate = Button(calc, font=('arial', 15, 'bold'), command=lambda: evaluate(), bg="lavender", text="probate", bd=5, padx=0,
                 pady=10).grid(columnspan=10)

我不確定您要做什么，但這里有一個代碼按評論中的要求運行（它運行，遺囑認證按鈕執行操作）：

from tkinter import *
def click(num):
    global op
    op=op str(num)
    iptext.set(op)
def evaluate():
    global op
    output = str(eval(op))
    iptext.set(output)

def clearDisplay():
    global op
    op=""
    iptext.set(op)

def probate(op):

    # global probate_fee
    VALUE_CATEGORY1 = 10000
    VALUE_CATEGORY2 = 250000
    RATE_CATEGORY1 = 0.05
    RATE_CATEGORY2 = 0.03
    RATE_CATEGORY3 = 0.01
    estate_worth=eval(op)

    if (estate_worth) < 0:
        # is_on = False
        print("Invalid Enrty")
    else:
        if (estate_worth <= VALUE_CATEGORY1):
            probate_fee = 500
        elif ((estate_worth > VALUE_CATEGORY1) & (estate_worth <= VALUE_CATEGORY2)):
            probate_fee = (estate_worth - VALUE_CATEGORY1) * RATE_CATEGORY2   VALUE_CATEGORY1 * RATE_CATEGORY1
        elif (estate_worth > VALUE_CATEGORY2):
            probate_fee = (estate_worth - VALUE_CATEGORY2) * RATE_CATEGORY3   (
                        (VALUE_CATEGORY2 - VALUE_CATEGORY1) * RATE_CATEGORY2)   VALUE_CATEGORY1 * RATE_CATEGORY1
        else:
            print("Invalid Entry")
        iptext.set(str(probate_fee))
        
    # return str(probate_fee)

calc=Tk()
calc.title("GUI Calculator")
op=""
iptext=StringVar()
iparea=Entry(calc,font=('large,_font',15,'bold'),bd=10,justify="right",insertwidth=4,textvariable=iptext).grid(columnspan=10)
bt7=Button(calc,font=('arial',15,'bold'),command=lambda:click(7),bg="lavender",text="7",bd=5,padx=15,pady=10).grid(row=1,column=0)
bt8=Button(calc,font=('arial',15,'bold'),command=lambda:click(8),bg="lavender",text="8",bd=5,padx=15,pady=10).grid(row=1,column=1)
bt9=Button(calc,font=('arial',15,'bold'),command=lambda:click(9),bg="lavender",text="9",bd=5,padx=15,pady=10).grid(row=1,column=2)
add=Button(calc,font=('arial',15,'bold'),command=lambda:click(' '),bg="lavender",text=" ",bd=5,padx=15,pady=10).grid(row=1,column=3)
eql=Button(calc,font=('arial',15,'bold'),command=evaluate,bg="lavender",text="=",bd=5,padx=15,pady=10).grid(row=4,column=2)
div=Button(calc,font=('arial',15,'bold'),command=lambda:click('/'),bg="lavender",text="/",bd=5,padx=15,pady=10).grid(row=4,column=3)
btC=Button(calc,font=('arial',15,'bold'),command=clearDisplay,bg="lavender",text="C",bd=5,padx=15,pady=10).grid(row=4,column=1)
btP=Button(calc,font=('arial',15,'bold'),command=lambda: probate(op), bg="lavender", text="probate", bd=5, padx=0, pady=10).grid(columnspan=10)

calc.mainloop()

標籤：Python 功能 tkinter

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