def keys(self, *args, **kwds):
"""Returns an iterator over FIDs, optionally
filtered by a test for spatial intersection with the provided
``bbox``, a (minx, miny, maxx, maxy) tuple or a geometry
``mask``.
Positional arguments ``stop`` or ``start, stop[, step]`` allows
iteration to skip over items or stop at a specific item.
"""
if self.closed:
raise ValueError("I/O operation on closed collection")
elif self.mode != 'r':
raise IOError("collection not open for reading")
if args:
s = slice(*args)
start = s.start
stop = s.stop
step = s.step
else:
start = stop = step = None
bbox = kwds.get('bbox')
mask = kwds.get('mask')
if bbox and mask:
raise ValueError("mask and bbox can not be set together")
self.iterator = KeysIterator(self, start, stop, step, bbox, mask)
return self.iterator
def keys(self, *args, **kwds):
"""Returns an iterator over FIDs, optionally
filtered by a test for spatial intersection with the provided
``bbox``, a (minx, miny, maxx, maxy) tuple or a geometry
``mask``. An attribute filter can be set using an SQL ``where``
clause, which uses the `OGR SQL dialect
<https://gdal.org/user/ogr_sql_dialect.html#where>`__.
Positional arguments ``stop`` or ``start, stop[, step]`` allows
iteration to skip over items or stop at a specific item.
"""
if self.closed:
raise ValueError("I/O operation on closed collection")
elif self.mode != 'r':
raise IOError("collection not open for reading")
if args:
s = slice(*args)
start = s.start
stop = s.stop
step = s.step
else:
start = stop = step = None
bbox = kwds.get('bbox')
mask = kwds.get('mask')
if bbox and mask:
raise ValueError("mask and bbox can not be set together")
where = kwds.get('where')
self.iterator = KeysIterator(self, start, stop, step, bbox, mask,
where)
return self.iterator
