On Mon, May 30, 2016 at 12:13 PM, dirkjso...@gmail.com
<dirkjso...@gmail.com> wrote:
> Hi bob,
>
> I had used the wrong email address when I wrote to python tutor on this, and
> evidently it
> took a while for the monitors to let it go ahead and be entered in the list,
> so I apologize
> for the delay in my reply.
That's okay. Note that Tutor is a collaborative learning environment,
so that normally you should send your responses to the whole list, not
just me. That way we can all learn from what is written. So I am
sending this to the Tutor list, but not everything as I notice you
sent another response with pretty much everything to Alan and Tutor.
> I continued to mess with it, and it seems or appears that escape '\' was
> being noticed by
> the interpreter despite the fact it is in a triple quoted area!
>
> As for the traceback, (I am not sure what you mean by 'FULL TRACEBACK'),
> there was no
> highlighted point in the program. I simply got the message I printed here.
I am back at home now with access to Python 3. What I meant was, if I
have this Python file, test_traceback.py:
#!/usr/bin/env python3
print('''I will deliberately use a backslash inside this triple-quote.\''')
When I run this code from the command line, I get:
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:\Windows\system32>e:
E:\>cd /py_projects
E:\py_projects>py test_traceback.py
File "test_traceback.py", line 5
^
SyntaxError: EOF while scanning triple-quoted string literal
This is what I mean by a full traceback. Notice it tells me what line
of my code file where it first encountered a problem. Just so you
have it in mind, with things involving quotes issues, the actual point
of error might be several lines earlier. But in this case I kept
things simple to illustrate the point.
Now if you ran my one-line program in the Python interpreter, you
would get a different kind of problem:
Python 3.5.1 (v3.5.1:37a07cee5969, Dec 6 2015, 01:54:25) [MSC v.1900
64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
py3: print('''I will deliberately use a backslash inside this triple-quote.\''')
...
...
...
...
...
Notice that every time I hit return in the interpreter, trying to
*run* the code, it would not do so. Instead, every time I press
<Enter> I get three dots. This is because in my actual code it sees
the second triple-quote as being two single-quotes and a parenthesis.
It does not see the triple-quote as yet being completed, and,
additionally, it does not see the print function as being closed. So
if I do these completions, I get:
py3: print('''I will deliberately use a backslash inside this triple-quote.\''')
...
...
...
...
... '
...
...
... '''
... )
I will deliberately use a backslash inside this triple-quote.''')
'
py3:
Notice the extra single-quote I threw in. I hope it shows in more
detail what is going on.
HTH!
boB
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