m using Python 3.4.2
This is my code:
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('*Front', '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=iEquals:
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= buton(EqualsButton, LEFT, iEquals,
lambda storeObj=display, s=' %s '%Equals:
storeObj.set(storeObj.get()+s))
def calc(self, display):
try:
display.set(eval(display.get()))
except:
display.set("Type an actual equation please!")
if __name__ == '__main__':
app().mainloop()
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