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add docstrings in videoalpha_module.py

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This commit is contained in:
Vasyl Nakvasiuk
2013-01-31 14:52:58 +02:00
committed by Valera Rozuvan
parent 12eda46238
commit 1d08e22718
1 changed files with 6 additions and 7 deletions
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13
common/lib/xmodule/xmodule/videoalpha_module.py
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@@ -54,9 +54,10 @@ class VideoAlphaModule(XModule):
if 'position' in state:
self.position = int(float(state['position']))
def _get_source(self, xmltree, extension=['mp4', 'ogv', 'avi', 'webm']):
# find the first valid source
condition = lambda src: any([src.endswith(ext) for ext in extension])
def _get_source(self, xmltree, extensions=['mp4', 'ogv', 'avi', 'webm']):
"""Find the first valid source, which ends with one of
`extensions`."""
condition = lambda src: any([src.endswith(ext) for ext in extensions])
return self._get_first_external(xmltree, 'source', condition)
def _get_track(self, xmltree):
@@ -64,10 +65,8 @@ class VideoAlphaModule(XModule):
return self._get_first_external(xmltree, 'track')
def _get_first_external(self, xmltree, tag, condition=bool):
"""
Will return the first valid element
of the given tag.
'valid' means has a non-empty 'src' attribute
"""Will return the first 'valid' element of the given tag.
'valid' means that `condition('src' attribute) == True`
"""
result = None
for element in xmltree.findall(tag):