Here's the code. If you have time, look it over and give me suggestions for
improvement!
(big toothy grin)
### Start of Calculator.py ###
from __future__ import division
from Tkinter import *
class Application(Frame):
def ctb(self):
if self.shouldblank:
self.distext.set('')
self.shouldblank = False
def adddigit0(self):
self.ctb()
self.distext.set(self.distext.get()+'0')
def adddigit1(self):
self.ctb()
self.distext.set(self.distext.get()+'1')
def adddigit2(self):
self.ctb()
self.distext.set(self.distext.get()+'2')
def adddigit3(self):
self.ctb()
self.distext.set(self.distext.get()+'3')
def adddigit4(self):
self.ctb()
self.distext.set(self.distext.get()+'4')
def adddigit5(self):
self.ctb()
self.distext.set(self.distext.get()+'5')
def adddigit6(self):
self.ctb()
self.distext.set(self.distext.get()+'6')
def adddigit7(self):
self.ctb()
self.distext.set(self.distext.get()+'7')
def adddigit8(self):
self.ctb()
self.distext.set(self.distext.get()+'8')
def adddigit9(self):
self.ctb()
self.distext.set(self.distext.get()+'9')
def adddigitdot(self):
if not self.distext.get().count('.'):
self.ctb()
self.distext.set(self.distext.get()+'.')
def equal(self):
if self.action:
self.newnum = self.distext.get()
self.newnum = str(eval(self.oldnum+self.action+self.newnum))
self.distext.set(self.newnum)
self.oldnum = '0'
self.action = ''
self.shouldblank = True
def add(self):
if self.action:
self.equal()
self.oldnum = self.distext.get()
self.action = '+'
else:
self.oldnum = self.distext.get()
self.action = '+'
self.shouldblank = True
def subtract(self):
if self.action:
self.equal()
self.oldnum = self.distext.get()
self.action = '-'
else:
self.oldnum = self.distext.get()
self.action = '-'
self.shouldblank = True
def multiply(self):
if self.action:
self.equal()
self.oldnum = self.distext.get()
self.action = '*'
else:
self.oldnum = self.distext.get()
self.action = '*'
self.shouldblank = True
def divide(self):
if self.action:
self.equal()
self.oldnum = self.distext.get()
self.action = '/'
else:
self.oldnum = self.distext.get()
self.action = '/'
self.shouldblank = True
def clear(self):
self.action = ''
self.oldnum = '0'
self.distext.set('0')
self.shouldblank = True
def memrecall(self):
self.distext.set(self.memory)
self.shouldblank = True
def memminus(self):
self.memory = str(eval(self.memory+"-"+self.distext.get()))
self.shouldblank = True
def memplus(self):
self.memory = str(eval(self.memory+"+"+self.distext.get()))
self.shouldblank = True
def createWidgets(self):
self.distext = StringVar()
self.display =
Entry(self,textvariable=self.distext,width=22,justify='right')
self.display.grid(row=0,column=1,columnspan=4)
self.b0 =
Button(self,text='0',command=self.adddigit0,width=4,height=3)
self.b0.grid(row=5,column=1)
self.b1 =
Button(self,text='1',command=self.adddigit1,width=4,height=3)
self.b1.grid(row=4,column=1)
self.b2 =
Button(self,text='2',command=self.adddigit2,width=4,height=3)
self.b2.grid(row=4,column=2)
self.b3 =
Button(self,text='3',command=self.adddigit3,width=4,height=3)
self.b3.grid(row=4,column=3)
self.b4 =
Button(self,text='4',command=self.adddigit4,width=4,height=3)
self.b4.grid(row=3,column=1)
self.b5 =
Button(self,text='5',command=self.adddigit5,width=4,height=3)
self.b5.grid(row=3,column=2)
self.b6 =
Button(self,text='6',command=self.adddigit6,width=4,height=3)
self.b6.grid(row=3,column=3)
self.b7 =
Button(self,text='7',command=self.adddigit7,width=4,height=3)
self.b7.grid(row=2,column=1)
self.b8 =
Button(self,text='8',command=self.adddigit8,width=4,height=3)
self.b8.grid(row=2,column=2)
self.b9 =
Button(self,text='9',command=self.adddigit9,width=4,height=3)
self.b9.grid(row=2,column=3)
self.bdot =
Button(self,text='.',command=self.adddigitdot,width=4,height=3)
self.bdot.grid(row=5,column=2)
self.equalsign =
Button(self,text="=",command=self.equal,width=4,height=3)
self.equalsign.grid(row=5,column=3)
self.plussign =
Button(self,text='+',command=self.add,width=4,height=3)
self.plussign.grid(row=5,column=4)
self.minussign =
Button(self,text="-",command=self.subtract,width=4,height=3)
self.minussign.grid(row=4,column=4)
self.timessign =
Button(self,text='x',command=self.multiply,width=4,height=3)
self.timessign.grid(row=3,column=4)
self.divsign =
Button(self,text='/',command=self.divide,width=4,height=3)
self.divsign.grid(row=2,column=4)
self.clearb =
Button(self,text='ON/C',command=self.clear,width=4,height=3)
self.clearb.grid(row=1,column=4)
self.mrc =
Button(self,text='MRC',command=self.memrecall,width=4,height=3)
self.mrc.grid(row=1,column=1)
self.mm =
Button(self,text="M-",command=self.memminus,width=4,height=3)
self.mm.grid(row=1,column=2)
self.mp =
Button(self,text="M+",command=self.memplus,width=4,height=3)
self.mp.grid(row=1,column=3)
def __init__(self, master=None):
Frame.__init__(self,master)
self.master.title("Calculator by Jacob, Inc.")
self.pack(fill='both')
self.oldnum = '0'
self.memory = '0'
self.action = ''
self.shouldblank = True
self.createWidgets()
app = Application()
app.mainloop()
### End of Calculator.py ###
Is there some way that I could loop over those button definitions?
proposal - code
a = """
def adddigit%s(self):
self.ctb()
self.distext.set(self.distext.get()+'%s')
"""
for i in range(10):
exec a % (i,i)
Pretty cool, huh? I've got my thinking cap on today!
Thanks in advance for suggestions,
Jacob
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