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#!/usr/bin/python
# -*- coding: utf-8 -*-
#
# Copyright 2011 Facundo Batista
#
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License version 3, as published
# by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranties of
# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR
# PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program. If not, see <http://www.gnu.org/licenses/>.
#
# For further info, check https://launchpad.net/encuentro
"""The package."""
import sys
IMPORT_MSG = u"""
ERROR! Problema al importar %(module)r
Probablemente falte instalar una dependencia. Se necesita tener instalado
el paquete %(package)r versión %(version)s o superior.
"""
class NiceImporter(object):
"""Show nicely successful and errored imports."""
def __init__(self, module, package, version):
self.module = module
self.package = package
self.version = version
def __enter__(self):
pass
def _get_version(self):
"""Get the version of a module."""
mod = sys.modules[self.module]
for attr in ('version', '__version__', 'ver'):
v = getattr(mod, attr, None)
if v is not None:
return v
return "<desconocida>"
def __exit__(self, exc_type, exc_value, traceback):
if exc_type is None:
version = self._get_version()
print "Modulo %r importado ok, version %r" % (self.module, version)
else:
print IMPORT_MSG % dict(module=self.module, package=self.package,
version=self.version)
# test some packages! gtk and twisted are controlled in main.py, as they
# import order is critical because of the reactor
# pylint: disable=W0611
with NiceImporter('xdg', 'python-xdg', '0.15'):
import xdg
with NiceImporter('mechanize', 'python-mechanize', '0.1.11'):
import mechanize
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