Newbie type trouble

[StepIre]

Hey All,

sorry if this is a stupid question but im still new to all this.
i want to enter something into a text field..

but i want for example the time in 24hr format "2200". How can i ensure that what the person is entering is in fact an int?

Thanks for any help guys

[vegaseat]

If you use the Tkinter GUI toolkit, you can use an input dialog box called askinteger, it makes sure only integers are entered. A typical example ...

# use Tkinter popup dialogs for input

import Tkinter as tk
import tkSimpleDialog as tsd  # has askfloat, askinteger, askstring

def get_data():
    miles = tsd.askfloat('Miles', 'Enter miles driven')
    petrol = tsd.askfloat('Petrol', 'Enter gallon of petrol consumed')
    str1 = "Your milage is %0.2f miles/gallon" % (miles/petrol)
    var1.set(str1)

root = tk.Tk()
var1 = tk.StringVar()

button = tk.Button(root, text="Get data", command=get_data)
button.pack(pady=5)
label = tk.Label(root, textvariable=var1)
label.pack()

root.mainloop()

Also, you can use this small function that makes sure an integer is entered within a given range ...

def check_input(low, high):
    """
    check the input to be an integer number within a given range
    """
    prompt = "Enter a 24 hour time (hhmm) between %d and %d: " % (low, high)
    while True:
        try:
            val = int(raw_input(prompt))
            if low <= val <= high:
                return val
        except ValueError:
            print "Just an integer number!"

# expect an integer number between 0000 and 2359
time24h = check_input(0, 2359)
print time24h