[Python-bugs-list] [ python-Bugs-473864 ] doctest expects spurios space (original) (raw)

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Mon, 22 Oct 2001 19:25:26 -0700

Bugs item #473864, was opened at 2001-10-22 18:36 You can respond by visiting: http://sourceforge.net/tracker/?func=detail&atid=105470&aid=473864&group_id=5470

Category: Python Library

Group: None Status: Closed Resolution: Fixed Priority: 5 Submitted By: Nobody/Anonymous (nobody) Assigned to: Tim Peters (timone) Summary: doctest expects spurios space

Initial Comment: When trying something like this:

for k in ((1, 2), (3, 4)): ... print k, ... (1, 2) (3, 4)

doctest expects an extra leading space in the output. See the attached file for some more details.

Sverker

Comment By: Tim Peters (timone) Date: 2001-10-22 19:25

Message: Logged In: YES user_id=31435

You're screwing yourself with the trailing comma in the preceding example. This sets the magical "softspace" attribute on doctest's stdout proxy, which causes Python to generate a leading space on the next example's first line of output.

This is repaired now in current CVS doctest

Lib/doctest.py; new revision: 1.21

via destroying the softspace attr after every example.
Before 2.2, don't write examples like this. If you have to use a trailing comma in a "print" example, use an empty print statement afterwards to ensure the last output line is terminated correctly. So, e.g.,

for i in range(2): ... print i, ... print 0 1

instead of

for i range(2): ... print i, 0 1

Then it will work correctly under all versions of doctest.
At heart, doctest can't tell whether or not example output lines actually terminated with a newline (since the examples doctest sees are taken from Python files, it always look like they have a terminating newline).

Comment By: Nobody/Anonymous (nobody) Date: 2001-10-22 18:47

Message: Logged In: NO

I forgot my email before when I sent in the bug report. Interested to know if it is a real bug or if it is just me and my system.. sverker.is@home.se

You can respond by visiting: http://sourceforge.net/tracker/?func=detail&atid=105470&aid=473864&group_id=5470