我对整个tkinter / python还是比较陌生，我刚刚创建了以下计算器：
import tkinter as tk
class theCalculator:
def __init__(self, master):
master.wm_title("Calculator")
master.geometry("340x350")
master.resizable(0, 0)
signsList = ["-","+","*","/","%"]
#Declaring the buttons
self.textField = tk.Entry(master, width=16, font=("Arial Bold",20))
self.textField.place(x=40,y=50)
self.cButton = tk.Button(master, text="C", width=14, height=2, command = lambda:cleanSpace(self))
self.cButton.place(x=40, y=100)
self.modButton = tk.Button(master, text="%", width=5, height=2,command=lambda:signThings(self,"%"))
self.modButton.place(x=180, y=100)
self.divButton = tk.Button(master, text="/", width=5, height=2,command=lambda:signThings(self,"/"))
self.divButton.place(x=248, y=100)
self.xButton = tk.Button(master, text="x", width=5, height=2, bg="yellow",command=lambda:signThings(self,"*"))
self.xButton.place(x=248, y=142)
self.minusButton = tk.Button(master, text="-", width=5, height=2, bg="yellow",command=lambda:signThings(self,"-"))
self.minusButton.place(x=248, y=185)
self.plusButton = tk.Button(master, text="+", width=5, height=2, bg ="yellow",command=lambda:signThings(self,"+"))
self.plusButton.place(x=248, y=228)
self.nineButton = tk.Button(master, text="9", width=5, height=2,command=lambda:setText(self,"9"))
self.nineButton.place(x=40, y=142)
self.eightButton = tk.Button(master, text="8", width=5, height=2,command=lambda:setText(self,"8"))
self.eightButton.place(x=110, y=142)
self.sevenButton = tk.Button(master, text="7", width=5, height=2,command=lambda:setText(self,"7"))
self.sevenButton.place(x=180, y=142)
self.sixButton = tk.Button(master, text="6", width=5, height=2,command=lambda:setText(self,"6"))
self.sixButton.place(x=40, y=185)
self.fiveButton = tk.Button(master, text="5", width=5, height=2,command=lambda:setText(self,"5"))
self.fiveButton.place(x=110, y=185)
self.fourButton = tk.Button(master, text="4", width=5, height=2,command=lambda:setText(self,"4"))
self.fourButton.place(x=180, y=185)
self.threeButton = tk.Button(master, text="3", width=5, height=2,command=lambda:setText(self,"3"))
self.threeButton.place(x=40, y=228)
self.twoButton = tk.Button(master, text="2", width=5, height=2,command=lambda:setText(self,"2"))
self.twoButton.place(x=110, y=228)
self.oneButton = tk.Button(master, text="1", width=5, height=2,command=lambda:setText(self,"1"))
self.oneButton.place(x=180, y=228)
self.zeroButton = tk.Button(master, text="0", width=14, height=2,command=lambda:zeroThings(self))
self.zeroButton.place(x=40, y=271)
self.pointButton = tk.Button(master, text=".", width=5, height=2,command=lambda:dotThings(self))
self.pointButton.place(x=180, y=271)
self.equalsButton = tk.Button(master, text="=", width=5, height=2, bg="yellow",command=lambda:calculate(self))
self.equalsButton.place(x=248, y=271)
#Declaring the methods
def setText(self, text):
self.textField.insert(tk.END, text)
def signThings(self, sign):
theText = self.textField.get()
if(len(theText)==0):
print("The first character can't be a sign")
return 0;
if(theText[-1] in signsList):
print("Can't have two signs one after another")
return 0;
if(theText[-1]=="."):
print("Can't have a sign after .")
return 0;
self.textField.insert(tk.END, sign)
def calculate(self):
theResult = eval(self.textField.get())
self.textField.delete(0, tk.END)
self.textField.insert(0, str(round(theResult,4)))
def cleanSpace(self):
self.textField.delete(0, tk.END)
def zeroThings(self):
theText = self.textField.get()
if(len(theText)==1):
if(theText==0):
print("Can't have two zeroes one after another")
else:
self.textField.insert(tk.END,"0")
elif(len(theText)>1):
self.textField.insert(tk.END,"0")
def dotThings(self):
theText = self.textField.get()
numberOfSigns = 0
numberOfDots = 0
for c in theText:
if c in signsList:
numberOfSigns +=1
if c==".":
numberOfDots +=1
try:
if (numberOfSigns>=numberOfDots and theText[-1] not in signsList):
self.textField.insert(tk.END,".")
except Exception as e:
self.textField.insert(tk.END,".")
root = tk.Tk()
calc = theCalculator(root)
root.mainloop()
我想征询您的意见，我有一些问题：
还有其他方法可以声明按钮吗？即使用诸如for循环之类的东西来创建它们？
我很确定自己的“自我”游戏不太合适。您能给我一些改善建议吗？
您对改善我的功能逻辑有何建议？
请指出您遇到的其他缺陷。
谢谢