简易计算器，tkinter练手未优化,Python交流,技术交流,鱼C论坛

gdmao002 发表于 2020-9-7 23:56:43

简易计算器，tkinter练手未优化

本帖最后由 gdmao002 于 2020-11-25 09:20 编辑

https://s1.ax1x.com/2020/09/07/wKsOeK.jpg
以下是练手的简单计算器，未经过优化。写的不好海涵{:5_109:}

import tkinter
import re

def del_zero(*args):
global num
c()
r = re.match(r"(\d+\.?\d*)([/*+-]{0,2})(\d*?\.?\d*)(=?)$", num)
if r:
   if r.group(1) != '':# 第1个单元有值2个字符00-09判断
         if len(num) == 2:
            if len(r.group(1)) == 2:
               if r.group(1) == '0' and r.group(1).isdigit():
                     num = r.group(1)
   if r.group(2) != '':# 第2个单元满足不为空的时候
         if '.' == r.group(1)[-1]:# 判断第1个单元如果有1'.'在后的处理
            num = num[:-1]
         elif len(r.group(1)) >= 3:# 判断第1个单元如果有1'.'在中间对于多'0'处理
            if r.group(1) == '0' and r.group(1) == '.':
               # 处理.后一堆0 # 剩余的0个数
               for i in range(2, len(r.group(1))):
                     if r.group(1) != '0':
                        break
               else:
                     num = '0' + r.group(2)
         if len(r.group(2)) == 2:# 判断运算符号个数
            num = r.group(1) + r.group(2)[-1]
   if r.group(3) != '':# 判断第3个单元不为空的输入
         if len(r.group(3)) == 1:# 第3个单元有值2个字符00-09判断
            if not r.group(3).isdigit():
               num = num[:-1]
         elif len(r.group(3)) == 2:
            if r.group(3) == '0' and r.group(3).isdigit():
               num = r.group(1) + r.group(2) + r.group(3)
         elif len(r.group(3)) >= 3:
            if r.group(3)[-1] == '.' and r.group(3)[-2] == '.':# 处理第三单元.的个数
               num = num[:-1]
   if r.group(4) == '=':# 第4个单元为'='时
         if r.group(3) != '':
            if r.group(3)[-1] == '.':# 判断第3个单元.在最后的处理
               num = num[:-1]
            elif len(r.group(3)) >= 3:# 判断第3个单元如果出现0.00000这类的处理
               if r.group(3) == '0' and r.group(3) == '.':
                     for i in range(2, len(r.group(3))):# 处理.后一堆0 # 剩余的0个数
                        if r.group(3) != '0':
                           break
                     else:
                        num = r.group(1) + r.group(2) + '0'
            if r.group(2) != '' and r.group(3)[-1].isdigit():# 如果=号左边为数字开始结算
               cal_1()
         else:
            num = num[:-1]# 第3单元空第2单元空
   v.set(num)
else:
   num = num[:-1]
   v.set(num)

def fun0():
global num
c()
num += '0'
del_zero()

def fun1():
global num
c()
num += '1'
del_zero()

def fun2():
global num
c()
num += '2'
del_zero()

def fun3():
global num
c()
num += '3'
del_zero()

def fun4():
global num
c()
num += '4'
del_zero()

def fun5():
global num
c()
num += '5'
del_zero()

def fun6():
global num
c()
num += '6'
del_zero()

def fun7():
global num
c()
num += '7'
del_zero()

def fun8():
global num
c()
num += '8'
del_zero()

def fun9():
global num
c()
num += '9'
del_zero()

def fun():
global num
c()
num += '.'
del_zero()

def fun_add():
global num
c()
num += '+'
del_zero()

def fun_sub():
global num
c()
num += '-'
del_zero()

def fun_chen():
global num
c()
num += '*'
del_zero()

def fun_chu():
global num
c()
num += r'/'
del_zero()

def fun_del():
global num
c()
if num != '':
   num = num[:-1]
   v.set(num)

def fun_c():
global num
c()
if num != '':
   num = ''
v.set(num)

def fun_ce():
global num
c()
if num == '':
   v.set(num)
else:
   r = re.match(r"(\d+\.?\d*)([/*+-]{0,2})(\d*?\.?\d*)(=?)$", num)
   if r:
         if r.group(3) != '':
            num = r.group(1) + r.group(2)
            v.set(num)

# 状态函数负责清空结算
def c():
global num, count
if count == 1:
   num = ''
   count = 0

def cal_1():
global num, count
r = re.match(r"(\d+\.?\d*)([/*+-]{0,2})(\d*?\.?\d*)(=?)$", num)
sum1 = 0
if '.' in r.group(1):
   x = float(r.group(1))
else:
   x = int(r.group(1))
if '.' in r.group(3):
   y = float(r.group(3))
else:
   y = int(r.group(3))
if '+' == r.group(2):
   sum1 = x + y
elif '-' == r.group(2):
   sum1 = x - y
elif '*' == r.group(2):
   sum1 = x * y
elif '/' == r.group(2):
   if r.group(3) == '0':
         num = r.group(1) + r.group(2)
         return -1
   else:
         sum1 = x / y
num += str(sum1)

count = 1

def cal():
global num
num += '='
del_zero()

def callback(event):
if event.char == '0':
   fun0()
elif event.char == '1':
   fun1()
elif event.char == '2':
   fun2()
elif event.char == '3':
   fun3()
elif event.char == '4':
   fun4()
elif event.char == '5':
   fun5()
elif event.char == '6':
   fun6()
elif event.char == '7':
   fun7()
elif event.char == '8':
   fun8()
elif event.char == '9':
   fun9()
elif event.char == '.':
   fun()
elif event.char == '+':
   fun_add()
elif event.char == '-':
   fun_sub()
elif event.char == '*':
   fun_chen()
elif event.char == r'/':
   fun_chu()
elif event.char == '\r':
   cal()
else:
   pass

root = tkinter.Tk()
root.title('简易计算器')
root.resizable(0, 0)

frame2 = tkinter.Frame(root)
frame2.grid(row=0, column=1, padx=5, pady=5)

num = ''
count = 0
v = tkinter.StringVar()
label2 = tkinter.Label(frame2, textvariable=v).grid(row=0, column=1, padx=5, pady=5)

frame1 = tkinter.Frame(root)
frame1.grid(row=1, column=1, padx=5, pady=5)

root.bind('<Key>', callback)
root.focus_set()

tkinter.Button(frame1, text='←', width=4, command=fun_del).grid(row=2, column=0, padx=2, pady=5)
tkinter.Button(frame1, text='C', width=4, command=fun_c).grid(row=2, column=1, padx=2, pady=5)
tkinter.Button(frame1, text='CE', width=4, command=fun_ce).grid(row=2, column=2, padx=2, pady=5)
tkinter.Button(frame1, text='/', width=4, command=fun_chu).grid(row=2, column=3, padx=5, pady=5)
tkinter.Button(frame1, text='7', width=4, command=fun7).grid(row=3, column=0, padx=5, pady=2)
tkinter.Button(frame1, text='8', width=4, command=fun8).grid(row=3, column=1, padx=2, pady=2)
tkinter.Button(frame1, text='9', width=4, command=fun9).grid(row=3, column=2, padx=2, pady=2)
tkinter.Button(frame1, text='*', width=4, command=fun_chen).grid(row=3, column=3, padx=5, pady=2)
tkinter.Button(frame1, text='4', width=4, command=fun4).grid(row=4, column=0, padx=5, pady=2)
tkinter.Button(frame1, text='5', width=4, command=fun5).grid(row=4, column=1, padx=2, pady=2)
tkinter.Button(frame1, text='6', width=4, command=fun6).grid(row=4, column=2, padx=2, pady=2)
tkinter.Button(frame1, text='-', width=4, command=fun_sub).grid(row=4, column=3, padx=5, pady=2)
tkinter.Button(frame1, text='1', width=4, command=fun1).grid(row=5, column=0, padx=5, pady=2)
tkinter.Button(frame1, text='2', width=4, command=fun2).grid(row=5, column=1, padx=2, pady=2)
tkinter.Button(frame1, text='3', width=4, command=fun3).grid(row=5, column=2, padx=2, pady=2)
tkinter.Button(frame1, text='+', width=4, command=fun_add).grid(row=5, column=3, padx=5, pady=2)
tkinter.Button(frame1, text='0', width=4, command=fun0).grid(row=6, column=0, padx=5, pady=5)
tkinter.Button(frame1, text='.', width=4, command=fun).grid(row=6, column=1, padx=2, pady=5)
tkinter.Button(frame1, text='=', width=10, command=cal).grid(row=6, column=2, padx=5, pady=5, columnspan=2)
root.mainloop()

gdmao002 发表于 2020-9-8 00:05:45

如有什么疏漏欢迎指正{:5_105:}

zy88888 发表于 2020-9-8 10:28:35

不错，比我强，写了这么长

tan_81383 发表于 2020-9-8 11:06:00

厉害厉害，能写这么长

叼辣条闯世界 发表于 2020-11-22 15:21:07

所有的r = re.match(r'(\d+\.?\d*)([/*+-]{0,2})(\d*?\.?\d*)(=?), num)好像都漏了一个单引号

gdmao002 发表于 2020-11-25 09:07:14

叼辣条闯世界发表于 2020-11-22 15:21
所有的r = re.match(r'(\d+\.?\d*)([/*+-]{0,2})(\d*?\.?\d*)(=?), num)好像都漏了一个单引号

奇怪我直接用我的py文件复制过来的，怎么漏了呢。我刚打开了py文件我这里都是好的，那我重新在黏贴一遍吧，感谢你的提醒！

gdmao002 发表于 2020-11-25 09:16:49

gdmao002 发表于 2020-11-25 09:07
奇怪我直接用我的py文件复制过来的，怎么漏了呢。我刚打开了py文件我这里都是好的，那我重新在黏贴一遍吧 ...

奇怪我复制了一遍后再次发现还是少了单引号！惊了!

gdmao002 发表于 2020-11-25 09:22:13

叼辣条闯世界发表于 2020-11-22 15:21
所有的r = re.match(r'(\d+\.?\d*)([/*+-]{0,2})(\d*?\.?\d*)(=?), num)好像都漏了一个单引号

我把单引号换双引号就可以复制进来了。现在就可以了，感谢你的提醒！

yywwf2003 发表于 2021-1-31 21:46:48

厉害厉害，能写这么长

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简易计算器，tkinter练手未优化