[GRASS-dev] Documentation server build log full of syntax errors in pygrass

[Vaclav Petras]

Hi Pietro,

the build log on a server which is creating the documentation is full of
syntax errors in coming from pygrass. It's actually just one error but in
broadly used part (t.* as well as gunittest are affected). I guess that the
other error is just the result of the first one (see end of email for
tracebacks).

It seems that syntax:

>>> grc = ["A: C", "B: D", "C: E"]
>>> env = {k.strip(): v.strip() for k, v in [row.split(':') for row in grc
if row]}
>>> env
{'A': 'C', 'C': 'E', 'B': 'D'}

is not supported.

It seems to me that dictionary comprehension is not supported in Python 2.6
but I was not able to confirm this in the Python documentation.

I'm also not sure if the server still uses Python 2.6. Markus are you able
to check this?

Thanks for looking into that,
Vaclav


[1] http://grass.osgeo.org/grass71/binary/linux/snapshot/build.log

Traceback (most recent call last):
  File ".../scripts/t.vect.observe.strds", line 51, in <module>
    import grass.temporal as tgis
  File ".../etc/python/grass/temporal/__init__.py", line 28, in <module>
    from temporal_algebra import *
  File ".../etc/python/grass/temporal/temporal_algebra.py", line 450, in
<module>
    import grass.pygrass.modules as pymod
  File ".../etc/python/grass/pygrass/modules/__init__.py", line 2, in
<module>
    from grass.pygrass.modules.interface import Module, ParallelModuleQueue
  File ".../etc/python/grass/pygrass/modules/interface/__init__.py", line
9, in <module>
    from grass.pygrass.modules.interface import module
  File ".../etc/python/grass/pygrass/modules/interface/module.py", line 16,
in <module>
    from .env import G_debug
  File ".../etc/python/grass/pygrass/modules/interface/env.py", line 18
    env = {k.strip(): v.strip() for k, v in [row.split(':')
                                  ^
SyntaxError: invalid syntax


Traceback (most recent call last):
  File
"/usr/local/lib/python2.6/dist-packages/Sphinx-1.3.1-py2.6.egg/sphinx/ext/autodoc.py",
line 385, in import_object
    __import__(self.modname)
  File ".../etc/python/grass/temporal/__init__.py", line 28, in <module>
    from temporal_algebra import *
  File ".../etc/python/grass/temporal/temporal_algebra.py", line 450, in
<module>
    import grass.pygrass.modules as pymod
  File ".../etc/python/grass/pygrass/modules/__init__.py", line 2, in
<module>
    from grass.pygrass.modules.interface import Module, ParallelModuleQueue
  File ".../etc/python/grass/pygrass/modules/interface/__init__.py", line
7, in <module>
    from grass.pygrass.modules.interface import flag
ImportError: cannot import name flag
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