def list_templates(self, extensions=None, filter_func=None):
"""Returns a list of templates for this environment. This requires
that the loader supports the loader's
:meth:`~BaseLoader.list_templates` method.
If there are other files in the template folder besides the
actual templates, the returned list can be filtered. There are two
ways: either `extensions` is set to a list of file extensions for
templates, or a `filter_func` can be provided which is a callable that
is passed a template name and should return `True` if it should end up
in the result list.
If the loader does not support that, a :exc:`TypeError` is raised.
.. versionadded:: 2.4
"""
x = self.loader.list_templates()
if extensions is not None:
if filter_func is not None:
raise TypeError('either extensions or filter_func '
'can be passed, but not both')
filter_func = lambda x: '.' in x and \
x.rsplit('.', 1)[1] in extensions
if filter_func is not None:
x = list(ifilter(filter_func, x))
return x
def list_templates(self, extensions=None, filter_func=None):
"""Returns a list of templates for this environment. This requires
that the loader supports the loader's
:meth:`~BaseLoader.list_templates` method.
If there are other files in the template folder besides the
actual templates, the returned list can be filtered. There are two
ways: either `extensions` is set to a list of file extensions for
templates, or a `filter_func` can be provided which is a callable that
is passed a template name and should return `True` if it should end up
in the result list.
If the loader does not support that, a :exc:`TypeError` is raised.
.. versionadded:: 2.4
"""
x = self.loader.list_templates()
if extensions is not None:
if filter_func is not None:
raise TypeError('either extensions or filter_func '
'can be passed, but not both')
filter_func = lambda x: '.' in x and \
x.rsplit('.', 1)[1] in extensions
if filter_func is not None:
x = list(ifilter(filter_func, x))
return x
def firstof(*items):
return get_next(ifilter(None, items))()
