array not saving input

array not saving input

hey back again with the same code, well edited so it works better. anyway
trying to add the button input into the array and that works. what doesn't
work is the fact every time i call the function do() the values reset due
to them being local. i tried to fix this by making it global(within the
class) using the self.store array. this didn't seem to fix the problem so
if someone could help would be much appreciated here is the relevant code
def __init__(self,master):#is the master for the button widgets
self.count=0
self.store=["0"]
frame=Frame(master)
frame.pack()
self.addition = Button(frame, text="+", command=self.add)#when
clicked sends a call back for a +
self.addition.pack()
self.subtraction = Button(frame, text="-", command=self.sub)#when
clicked sends a call back for a -
self.subtraction.pack()
self.equate = Button(frame, text="=", command=self.equate)#when
clicked sends a call back for a =
self.equate.pack()
self.one = Button(frame, text="1", command=self.one)#when clicked
sends a call back for a -
self.one.pack()
def add(self):
self.do("+")
self.count=self.count+1
def sub(self):
self.do("-")
self.count=self.count+1
def equate(self):
self.do("=")
def one(self):
self.do("1")
self.count=self.count+1
def do(self, X):#will hopefully colaborate all of the inputs
cont, num = True, 0
strstore="3 + 8"#temporarily used to make sure the calculating works
self.store=["2","1","+","2","3","4"]#holds the numbers used to calculate.
for num in range(1):
if X == "=":
cont = False
self.store[self.count]=X
print(self.store[self.count])
print(self.store[:])#test code
if cont == False:
print(self.eval_binary_expr(*(strstore.split())))