tkinter 计算器中的小数

Question

这是一个功能齐全的计算器。对于那些需要它的人。这是一个功能齐全的计算器。对于那些需要它的人。这是一个功能齐全的计算器。对于那些需要它的人。这是一个功能齐全的计算器。对于那些需要它的人。这是一个功能齐全的计算器。对于那些需要它的人。这是一个功能齐全的计算器。对于那些需要它的人。这是一个功能齐全的计算器。对于那些需要它的人。这是一个功能齐全的计算器。对于那些需要它的人。这是一个功能齐全的计算器。送给有需要的人。

 from tkinter import *
from math import *

root = Tk()

root.title("Simple Calculator")

e = Entry(root, width=35, borderwidth=5)
e.grid(row=0, column=0, columnspan=3, padx=10, pady=10)



def button_click(number):
    current = e.get()
    e.delete(0, END)
    e.insert(0, str(current) + str(number))

def button_clear():
    e.delete(0, END)


def button_add():
    first_number = e.get()
    global f_num
    global math
    math = "addition"
    f_num = float(first_number)
    e.delete(0, END)


def button_equal():
    global f_num
    second_number = e.get()
    e.delete(0, END)
    if math == "addition":
        e.insert(0, f_num + float(second_number))
    if math == "subtraction":
        e.insert(0, f_num - float(second_number))
    if math == "multiplication":
        e.insert(0, f_num * float(second_number))
    if math == "division":
        e.insert(0, f_num / float(second_number))
    if math == "comma":
        e.insert(0,f_num +  + float(second_number))
    if math == "squere":
        e.insert(0, f_num ** int(2))
    if math == "sroot":
        e.insert(0, sqrt(f_num) )



def button_subtract():
    first_number = e.get()
    global f_num
    global math
    math = "subtraction"
    f_num = float(first_number)
    e.delete(0, END)



def button_multiply():
    first_number = e.get()
    global f_num
    global math
    math = "multiplication"
    f_num = float(first_number)
    e.delete(0, END)


def button_divide():
    first_number = e.get()
    global f_num
    global math
    math = "division"
    f_num = float(first_number)
    e.delete(0, END)

def button_comma():
    global f_num
    first_number = e.get()
    f_num=str(first_number)
    s_num = e.get()
    e.insert(0, str(f_num) +  str(".")  + str(s_num))

def Button_num(number):
    current=e.get()
    e.delete(0,END)
    e.insert(0,str(current)+ str(number))

def Button_squeree():
    global math
    global f_num
    first_number = e.get()
    f_num = int(first_number)
    math="squere"
    current=e.get()
    e.delete(0, END)
    e.insert(0,int(current) ^ int(first_number))

def Button_sroott():
    first_number = e.get()
    global f_num
    global math
    math = "sroot"
    f_num = float(first_number)
    e.delete(0, END)



#Sredi zarez!
'''   
def button_comma():
    current = e.get()
    e.insert(0, str(current) + str(","))



Button_comma = Button(root, text="," ,padx=40,pady=20,command=lambda: button_comma())
Button_comma.grid(row = 7 , column = 0 )
'''


# Definisi tastere
Button1 = Button(root, text="1", padx=40, pady=20, command=lambda: button_click(1))
Button2 = Button(root, text="2", padx=40, pady=20, command=lambda: button_click(2))
Button3 = Button(root, text="3", padx=40, pady=20, command=lambda: button_click(3))

Button4 = Button(root, text="4", padx=40, pady=20, command=lambda: button_click(4))
Button5 = Button(root, text="5", padx=40, pady=20, command=lambda: button_click(5))
Button6 = Button(root, text="6", padx=40, pady=20, command=lambda: button_click(6))

Button7 = Button(root, text="7", padx=40, pady=20, command=lambda: button_click(7))
Button8 = Button(root, text="8", padx=40, pady=20, command=lambda: button_click(8))
Button9 = Button(root, text="9", padx=40, pady=20, command=lambda: button_click(9))

Button0 = Button(root, text="0", padx=40, pady=20, command=lambda: button_click(0))
Button_add = Button(root, text="+", padx=38, pady=20, command=button_add)
Button_equal = Button(root, text="=", padx=87, pady=20, command=button_equal)

Button_clear = Button(root, text="Clear", padx=77, pady=20, command=button_clear)
Button_subtract = Button(root, text="-", padx=40, pady=20, command=button_subtract)
Button_multiply = Button(root, text="*", padx=40, pady=20, command=button_multiply)

Button_divide = Button(root, text="/", padx=41, pady=20, command=button_divide)
btn_decimal = Button(root, text=u'\u002E', padx=40, pady=20, command=lambda:Button_num("."))
Button_squere = Button(root,text="^",padx=40,pady=20,command=Button_squeree)

Button_sroot =  Button(root, text="r",padx=40, pady=20, command=Button_sroott)
'''
Button_comma = Button(root, text="." , padx=40 , pady=20 , command=button_comma)
'''

# stavi tastere na ekran
Button1.grid(row=3, column=0)
Button2.grid(row=3, column=1)
Button3.grid(row=3, column=2)

Button4.grid(row=2, column=0)
Button5.grid(row=2, column=1)
Button6.grid(row=2, column=2)

Button7.grid(row=1, column=0)
Button8.grid(row=1, column=1)
Button9.grid(row=1, column=2)

Button0.grid(row=4, column=0)
Button_add.grid(row=5, column=0)
Button_equal.grid(row=5, column=1, columnspan=2)

Button_clear.grid(row=4, column=1, columnspan=2)
Button_subtract.grid(row=6, column=0)
Button_multiply.grid(row=6, column=1)

Button_divide.grid(row=6, column=2)
btn_decimal.grid(row=7,column=0)
Button_squere.grid(row=7,column=1)


Button_sroot.grid(row=7 , column=2)








root.mainloop()

Answer 1

好的，所以我明白了你的疑问，是的，根据我的说法，这是一个有效的事情，第一个想法是使用 unicode 符号“.”，这对你有用。因此，我将只保留您需要的部分代码并按您的方式工作。

def Button_num(number):#although i kept the paramater as a number, you can use this
current=e.get()
e.delete(0,END) #if you want to delete the first number while getting second one
e.insert(0,str(current)+ str(number))    

#creating button for it 
btn_decimal=Button(root,text=u'\u002E',padx=20,pady=10,command=lambda:Button_num("."))
button_decimal.grid(row=5,column=2)#fill urs

因此，这将允许您创建和使用小数点符号，但请检查输入是否设置为浮点数。

将此视频用于 unicode 方面的未来参考 https://www.youtube.com/watch?v=b_8sPENjHw4

请注意我是否回答过头了，这是第一次回答并且仍在学习干净的代码。

tkinter 计算器中的小数

decimal in tkinter calculator

tkinter

calculator

python-3.x