how can i produce my buttons using while loop and a list if stirng
# python 2.x
#from Tkinter import *
#from tkFont import Font
# python 3.x
from tkinter import *
from tkinter.font import Font
def button(frame, text, command=None):
ft = Font(family=('Verdana'), size=14)
return Button(frame, text=text, font=ft, width=3, command=command)
def frame(frame, side=LEFT, bg="black"):
f = Frame(frame, background=bg, padx=5, pady=5)
f.pack(side=side, expand=YES, fill=BOTH)
return f
class App:
def __init__(self, tk):
ft = Font(family=('Verdana'), size=14)
main = frame(tk)
l_frame = frame(main)
r_frame = frame(main)
calc_frame = frame(l_frame)
self.btnquit = button(calc_frame, "Quit", tk.destroy)
self.btnquit.pack(side = LEFT)
self.input = Entry(calc_frame, font=ft, width=15, background="white")
self.input.pack(side=TOP)
self.btn_frame = frame(calc_frame)
x, y = 0, 0
for key in ("()%C", "+-*/", "1234", "5678", "90.="):
for c in key:
if c == "=":
btn = button(self.btn_frame, c, self.equalAction)
elif c == "C":
btn = button(self.btn_frame, c, self.cleanAction)
else:
btn = button(self.btn_frame, c, lambda i=c: self.input.insert(INSERT, i))
main.bind_all(c, lambda event, i=c:self.input.insert(INSERT, i)) # numbers binding
btn.grid(row=x, column=y)
y += 1
x += 1
y = 0
self.log = Text(r_frame, font=Font(family=('Verdana'), size=10), width=25, height=14, background="yellow")
self.log.pack(side=RIGHT)
main.bind_all('<BackSpace>', self.cleanInput)
#~ main.bind_all('1', lambda event, i='1':self.insertNumber(i))
#~ main.bind_all('2', lambda event, i='2':self.insertNumber(i))
main.bind_all('<Escape>', self.deleteLastDigit)
self.btn_backspace = button(calc_frame, "Backspace", self.deleteLastDigit)
self.btn_backspace.pack(side = LEFT)
# event=None to use function in command= and in binding
def deleteLastDigit(self, event=None):
text = self.input.get()[:-1]
self.input.delete(0, END)
self.input.insert(INSERT, text)
def insertNumber(self, number):
self.input.insert(INSERT, number)
def cleanInput(self, event):
self.input.delete(0, END)
self.log.delete(1.0, END)
def cleanAction(self):
self.input.delete(0, END)
def equalAction(self):
tmp = self.input.get()
try:
result = tmp + "=" + str(eval(tmp))
self.log.insert(1.0, result + "\n");
print(result)
except Exception:
self.log.insert(1.0, "Wrong expression\n");
if __name__ == '__main__':
root = Tk()
root.title("Calculator")
root.geometry()
app = App(root)
root.mainloop()
