[Tutor] Tutor Digest, Vol 157, Issue 39

[Marc Sebek]

Hi Rafael

You are appending quit to the list, before checking to see if quit has been
typed. You could move the "if Statement" up in the code and add an else
statement, so Quit is not appended to the list first thing.

while True:
    activity = input(prompt)

    if activity == "quit":
        print("Let me recap. This is what you've done today: %s." % ",
" .join(LogActivities))
   else:
        LogActivities.append(activity)

But you have an infinite loop here too, so unless you are adding more to
this, and plan to get out the loop, you should also add a break statment:
++++++++++++++++++++++++++++++++++++
    if activity == "quit":
        print("Let me recap. This is what you've done today: %s." % ",
" .join(LogActivities))
   break ###<<<<Add a break
+++++++++++++++++++++++++++++++++++

Or change the code structure and loop condition:

+++++++++++++++++++++++++++++++++++++
LogActivities = []
prompt = ("What have you done today? "
          "Enter 'quit' to exit. ")

activity = input(prompt)

while activity != "quit":
    LogActivities.append(activity)
    activity = input(prompt)

print("Let me recap. This is what you've done today: %s." %
",".join(LogActivities))
++++++++++++++++++++++++++++++++++++++

There's probably a more pythonistic way to write this, but without changing
the current set of statements too much, this works.

Cheers

On Mon, Mar 20, 2017 at 5:00 AM, <tutor-request at python.org> wrote:

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>    1. tiny, little issue with list (Rafael Knuth)
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> ---------- Forwarded message ----------
> From: Rafael Knuth <rafael.knuth at gmail.com>
> To: "Tutor at python.org" <Tutor at python.org>
> Cc:
> Bcc:
> Date: Sun, 19 Mar 2017 13:17:03 +0100
> Subject: [Tutor] tiny, little issue with list
> LogActivities = []
> prompt = ("What have you done today? ")
> prompt += ("Enter 'quit' to exit. ")
>
> while True:
>     activity = input(prompt)
>     LogActivities.append(activity)
>
>     if activity == "quit":
>         print("Let me recap. This is what you've done today: %s." % ",
> " .join(LogActivities))
>
> This program is supposed to take user input and to log his activities
> into a list.
> All works well, only when the user quits, the program adds 'quit' to
> LogActivities.
> How do I prevent my program from doing this?
>
> Python 3.6.0 (v3.6.0:41df79263a11, Dec 23 2016, 07:18:10) [MSC v.1900
> 32 bit (Intel)] on win32
> Type "copyright", "credits" or "license()" for more information.
> >>>
> = RESTART: C:/Users/Rafael/Documents/01 - BIZ/PYTHON/Python
> Code/PPC_159.py =
> What have you done today? Enter 'quit' to exit. shower
> What have you done today? Enter 'quit' to exit. walk the dog
> What have you done today? Enter 'quit' to exit. drink coffee
> What have you done today? Enter 'quit' to exit. prepare lunch
> What have you done today? Enter 'quit' to exit. take coding lesson
> What have you done today? Enter 'quit' to exit. quit
> Let me recap. This is what you've done today: shower, walk the dog,
> drink coffee, prepare lunch, take coding lesson, quit.
> What have you done today? Enter 'quit' to exit.
>
>
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