/usr/lib/python2.7/dist-packages/shapely/iterops.py is in python-shapely 1.6.4-1.
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Iterative forms of operations
"""
from shapely.geos import PredicateError
from shapely.topology import Delegating
class IterOp(Delegating):
"""A generating non-data descriptor.
"""
def __call__(self, context, iterator, value=True):
if context._geom is None:
raise ValueError("Null geometry supports no operations")
for item in iterator:
try:
this_geom, ob = item
except TypeError:
this_geom = item
ob = this_geom
if not this_geom._geom:
raise ValueError("Null geometry supports no operations")
try:
retval = self.fn(context._geom, this_geom._geom)
except Exception as err:
self._check_topology(err, context, this_geom)
if bool(retval) == value:
yield ob
# utilities
disjoint = IterOp('disjoint')
touches = IterOp('touches')
intersects = IterOp('intersects')
crosses = IterOp('crosses')
within = IterOp('within')
contains = IterOp('contains')
overlaps = IterOp('overlaps')
equals = IterOp('equals')
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