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Calculator
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from tkinter import* | |
def iCalc(source, side): | |
storeObj = Frame(source,borderwidth = 1, bd= 4,bg="powder blue") | |
storeObj.pack(side=side,expand=YES,fill=BOTH) | |
return storeObj | |
def button (source, side, text, command=None): | |
storeObj = Button(source, text=text, command=command) | |
storeObj.pack(side=side,expand=YES,fill=BOTH) | |
return storeObj | |
class app(Frame): | |
def __init__(self): | |
Frame.__init__(self) | |
self.option_add('*Font','arial 20 bold') | |
self.pack(expand=YES,fill=BOTH) | |
self.master.title('Calculator') | |
display = StringVar() | |
Entry(self,relief= RIDGE, textvariable=display,justify='right',bd=30,bg="powder blue").pack(side=Top,expand=YES,fill=BOTH) | |
for clearBut in (["CE"],["C"]): | |
erase = iCalc(self,TOP) | |
for ichar in clearBut: | |
button(erase,LEFT,ichar, | |
lambda storeObj=display, q=ichar: storeObj.set('')) | |
for NumBut in ("789/","456*","123-","0.+"): | |
FunctionNum = iCalc(self,TOP) | |
for iEquals in NumBut: | |
button(FunctionNum,LEFT,iEquals, | |
lambda storeObj=display,q=char: storeObj.set(storeObj.get() +q)) | |
EqualsButton = iCalc(self,TOP) | |
for iEquals in "=": | |
if iEquals == '=': | |
btniEquals = button(EqualsButton,LEFT,iEquals) | |
btniEquals.bind('<ButtonRelease-1>', | |
lambda e, s=self, storeObj=display: s.calc(storeObj), '+') | |
else: | |
btniEquals = button(EqualsButton,LEFT,iEquals, | |
lambda storeObj=display,s=' %s '%iEquals:storeObj.set(storeObj.set(storeObj.get()+s)) | |
def calc(self, display): | |
try: | |
display.set(eval(display.get())) | |
except: | |
display.set("ERROR") | |
if __name__=='__main__': | |
app().mainloop() |
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