Python的GUI Tkinter的科学计算器

“为什么罪不工作这是给我一个语法错误我在Python编写一个科学计算器3.6Python的GUI Tkinter的科学计算器

from tkinter import * 
from tkinter import ttk 
from math import* 

class Calculator: 
    calc_value = 0.0 
    div_trigger = False 
    mult_trigger = False 
    add_trigger = False 
    sub_trigger = False 
    asin_trigger = False 


    def button_press(self, value): 
     entry_val = self.number_entry.get() 
     entry_val += value 
     self.number_entry.delete(0, "end") 
     self.number_entry.insert(0, entry_val) 


    def isfloat(self, str_val): 
     try: 
      float(str_val) 
      return True 
     except ValueError: 
      return False 


    def math_button_press(self, value): 
     if self.isfloat(str(self.number_entry.get())): 
      self.add_trigger = False 
      self.sub_trigger = False 
      self.mult_trigger = False 
      self.div_trigger = False 
      self.asin_trigger = False 
      self.calc_value = float(self.entry_value.get()) 
      if value == "/": 
       print("/ Pressed") 
       self.div_trigger = True 
      elif value == "*": 
       print("* Pressed") 
       self.mult_trigger = True 
      elif value == "+": 
       print("+ Pressed") 
       self.add_trigger = True 
      elif value == "sin": 
       print("sin Pressed") 
       self.asin_trigger = True 
      else: 
       print("- Pressed") 
       self.sub_trigger = True 
      self.number_entry.delete(0, "end") 


    def equal_button_press(self): 
     if self.add_trigger or self.sub_trigger or self.mult_trigger or self.div_trigger or self.asin_trigger: 

      if self.add_trigger: 
       solution = self.calc_value + float(self.entry_value.get()) 
      elif self.sub_trigger: 
       solution = self.calc_value - float(self.entry_value.get()) 
      elif self.mult_trigger: 
       solution = self.calc_value * float(self.entry_value.get()) 
      elif self.asin_trigger: 
       solution = self.calc_value sin float(self.entry_value.get()) 
      else: 
       solution = self.calc_value/float(self.entry_value.get()) 

      print(self.calc_value, " ", float(self.entry_value.get()), 
              " ", solution) 

      # 
      self.number_entry.delete(0, "end") 

      self.number_entry.insert(0, solution) 


    def __init__(self, root): 
     self.entry_value = StringVar(root, value="") 
     root.title("Calculator") 
     root.geometry("860x440") 
     root.resizable(width=False, height=False) 
     style = ttk.Style() 
     style.configure("TButton", 
         font="Serif 15", 
         padding=10) 

     style.configure("TEntry", 
         font="Serif 18", 
         padding=10) 

     # Create the text entry box 
     self.number_entry = ttk.Entry(root, 
         textvariable=self.entry_value, width=50) 
     self.number_entry.grid(row=0, columnspan=4) 

     # ----- 1st Row ----- 

     self.button7 = ttk.Button(root, text="7", command=lambda: self.button_press('7')).grid(row=1, column=0) 

     self.button8 = ttk.Button(root, text="8", command=lambda: self.button_press('8')).grid(row=1, column=1) 

     self.button9 = ttk.Button(root, text="9", command=lambda: self.button_press('9')).grid(row=1, column=2) 

     self.button_div = ttk.Button(root, text="/", command=lambda: self.math_button_press('/')).grid(row=1, column=3) 

     # ----- 2nd Row ----- 

     self.button4 = ttk.Button(root, text="4", command=lambda: self.button_press('4')).grid(row=2, column=0) 

     self.button5 = ttk.Button(root, text="5", command=lambda: self.button_press('5')).grid(row=2, column=1) 

     self.button6 = ttk.Button(root, text="6", command=lambda: self.button_press('6')).grid(row=2, column=2) 

     self.button_mult = ttk.Button(root, text="*", command=lambda: self.math_button_press('*')).grid(row=2, column=3) 

     # ----- 3rd Row ----- 

     self.button1 = ttk.Button(root, text="1", command=lambda: self.button_press('1')).grid(row=3, column=0) 

     self.button2 = ttk.Button(root, text="2", command=lambda: self.button_press('2')).grid(row=3, column=1) 

     self.button3 = ttk.Button(root, text="3", command=lambda: self.button_press('3')).grid(row=3, column=2) 

     self.button_add = ttk.Button(root, text="+", command=lambda: self.math_button_press('+')).grid(row=3, column=3) 

     # ----- 4th Row ----- 

     self.button_clear = ttk.Button(root, text="AC", command=lambda: self.button_press('AC')).grid(row=4, column=0) 

     self.button0 = ttk.Button(root, text="0", command=lambda: self.button_press('0')).grid(row=4, column=1) 

     self.button_equal = ttk.Button(root, text="=", command=lambda: self.equal_button_press()).grid(row=4, column=2) 

     self.button_sub = ttk.Button(root, text="-", command=lambda: self.math_button_press('-')).grid(row=4, column=3) 

     #------- 5th Row ------- 
     self.button_asin = ttk.Button(root, text="sin", command=lambda: self.math_button_press('sin')).grid(row=5, column=0) 

root = Tk() 

calc = Calculator(root) 

root.mainloop()

来源

2017-06-04 Jordan Clew

那么，你期望'self.calc_value sin float（self.entry_value.get（））'做了什么？ “罪”不是一个运算符，它只需要一个参数（不是两个）。 –

将来，请尝试将您的代码凝聚到专注于您的问题的[mcve]上。（并且请尽量整齐地格式化代码，而没有无意义的空行大块）。当你的代码产生错误信息时，你需要发布完整的错误追溯，不要只给我们模糊的提示。顺便说一句，'asin'是'sin'的反函数，所以使用'asin'这个名称来指代'sin'是相当混乱的。 –

我已经考虑了你所说的话，我没有注意到它指的是对罪的反函数。那么你的建议是什么让这个计算器科学？我应该如何处理这个罪？ –

在你equal_button_press功能，写：

elif self.asin_trigger: 
    solution = sin(float(self.calc_value)) # the sine of x is given by sin(x)

然后：

# remove float() to prevent crashing when the Entry box is empty 
print(self.calc_value, " ", self.entry_value.get(), " ", solution)

来源

2017-06-05 09:59:55 Josselin

Python的GUI Tkinter的科学计算器

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