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  1. #1
    New to the CF scene
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    Dec 2011
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    Unhappy stuck with python, please advise

    so im trying to make it so that pressing enter without inputting any value, will break the loop, however, an empty string can be used because of
    for i in range(len(x_str_array)):
    x[i] = int(x_str_array[i])
    bit.
    Code:
    'Exercise 7.3'
    
    # modified program from exercise 7.2
    
    a=1
    z=""
    while x !=z:
        x_str = raw_input('Enter Start,Stop,Increment: ')
        if x==z:
            break
        else:
            x_str_array = x_str.split(',') # splits the string where a comma pops up
            x = range(len(x_str_array)) # Preallocation step- makes x= the same length as x_str_array
            for i in range(len(x_str_array)):
                x[i] = int(x_str_array[i])
            a=x[0]
            b=x[1]
            c=x[2]
            for number in range(a,b,c):
                print "number:", number, " square:", number**2, " cube:", number**3
    please advise me on this.

    p.s yes i am a complete novie, haha

    i thought maybe using an empty tuple or list or something, but that wouldn't work either.

  • #2
    Regular Coder Samhain13's Avatar
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    so that pressing enter without inputting any value, will break the loop
    Code:
    while True:
        # Get some user input.
        x_str = raw_input("Someting: ")
        # If the user simply hits enter or supplies a string full of spaces, break.
        if not x_str or x_string.isspace():
            break
        # More stuff here.
    Happy new year!
    I am a Man of Truth. I am a Free Human Person. I am a Peacemaker.
    ** Independent Multimedia Artist in Pasig **


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