On Mon, Feb 15, 2016 at 9:56 AM, Geoff Munn <geoff.m...@gmail.com> wrote:
> On Sunday, 14 February 2016 13:39:52 UTC, Geoff Munn wrote:
> > Hi,
> >
> > Noob at the Python thing so here goes,
> >
> > I have copied a program to demonstrate control structures in Python but
> get a syntax error at line 31, isint = False. I'm using Python 2.7.6 and
> Linux Mint based around ubuntu14.04.1. I have pasted all the code below,
> >
> >
> >
> > #!/usr/bin/env python2
> >
> > '''
> > We are going to write a program that will ask for the user to input an
> arbitary
> > number of integers, store them in a collection, and then demonstrate how
> > the collection would be used with various control structures
> > '''
> >
> > import sys # Used for the sys.exit function
> >
> > target_int=raw_input("How many integers?")
> >
> > '''
> > By now the variable target_int contains a string representation of
> > whatever the user typed. We nee to try and convert that to an integer but
> > be ready to deal with the error if it's not. Otherwise the program will
> crash
> > '''
> >
> > try:
> > target_int=int(target_int)
> > except ValueError:
> > sys.exit("You must enter an integer")
> >
> > ints=list() # list to store the integers
> >
> > count = 0 # Track how many integers have been inputted
> >
> > # Keep asking for a number until we have reached the required number
> > while count < target_int:
> > new_int=raw_input("Please enter integer {0}:".format(count +1)
> > isint = False
> > try:
> > new_int=int(new_int) # If the above succeeds then isint will
> > #be set to true: isint = True
> >
> > except:
> > print("You must enter an integer")
> >
> > '''
> > Only carry on if we have an integer. If not we will loop again.
> > The == below is a comparision operator, a single = is an asignment
> operator
> > '''
> > if isnit==True:
> > ints.append(new_int) # Adds the integer to the collection
> > count += 1 # Count is incremented by 1
> > # The for loop
> > print ("Using a for loop")
> > for values in ints:
> > print (str(value))
> > # The while loop
> > print ("Using a while loop")
> > total=len(ints) # We already have the total from above but using
> len we can determine from the ints list.
> > count = 0
> > while count < total:
> > print (str(ints[count]))
> > count += 1
>
> Thanks Peter and Chris, yes missed the parentheses by taking the error as
> being in line 31, DOH but a lesson learned. I have checked and checked the
> code I entered against the provided code and had to make some more changes
> to at least go through the first while loop but have given up on the rest
> of it. Given your comments do you think its worth persevering with this
> book or is there a better 'entry' into Python programming?
> --
> https://mail.python.org/mailman/listinfo/python-list
>
Learn Python the Hard Way is pretty good some people say. Its online.
Also Diving into Python is online written by the now offline Mark Pilgrim.
--
Joel Goldstick
http://joelgoldstick.com/stats/birthdays
--
https://mail.python.org/mailman/listinfo/python-list
