matroids: no relative imports

src/sage/matroids/advanced.py

@@ -52,16 +52,16 @@
 
 import sage.matroids.matroid
 import sage.matroids.basis_exchange_matroid
-from .minor_matroid import MinorMatroid
-from .dual_matroid import DualMatroid
-from .rank_matroid import RankMatroid
-from .circuits_matroid import CircuitsMatroid
-from .circuit_closures_matroid import CircuitClosuresMatroid
-from .basis_matroid import BasisMatroid
-from .flats_matroid import FlatsMatroid
-from .linear_matroid import LinearMatroid, RegularMatroid, BinaryMatroid, TernaryMatroid, QuaternaryMatroid
-from .utilities import setprint, newlabel, get_nonisomorphic_matroids, lift_cross_ratios, lift_map
-from . import lean_matrix
-from .extension import LinearSubclasses, MatroidExtensions
-from .union_matroid import MatroidUnion, MatroidSum, PartitionMatroid
-from .graphic_matroid import GraphicMatroid
+from sage.matroids.minor_matroid import MinorMatroid
+from sage.matroids.dual_matroid import DualMatroid
+from sage.matroids.rank_matroid import RankMatroid
+from sage.matroids.circuits_matroid import CircuitsMatroid
+from sage.matroids.circuit_closures_matroid import CircuitClosuresMatroid
+from sage.matroids.basis_matroid import BasisMatroid
+from sage.matroids.flats_matroid import FlatsMatroid
+from sage.matroids.linear_matroid import LinearMatroid, RegularMatroid, BinaryMatroid, TernaryMatroid, QuaternaryMatroid
+from sage.matroids.utilities import setprint, newlabel, get_nonisomorphic_matroids, lift_cross_ratios, lift_map
+from sage.matroids import lean_matrix
+from sage.matroids.extension import LinearSubclasses, MatroidExtensions
+from sage.matroids.union_matroid import MatroidUnion, MatroidSum, PartitionMatroid
+from sage.matroids.graphic_matroid import GraphicMatroid

src/sage/matroids/basis_exchange_matroid.pxd

@@ -1,7 +1,7 @@
 from sage.data_structures.bitset cimport *
 from sage.data_structures.bitset_base cimport bitset_t, bitset_s
-from .matroid cimport Matroid
-from .set_system cimport SetSystem
+from sage.matroids.matroid cimport Matroid
+from sage.matroids.set_system cimport SetSystem
 
 cdef class BasisExchangeMatroid(Matroid):
     cdef long _groundset_size, _matroid_rank, _bitset_size

src/sage/matroids/basis_exchange_matroid.pyx

@@ -25,8 +25,8 @@ AUTHORS:
 #                  https://www.gnu.org/licenses/
 # ****************************************************************************
 
-from .matroid cimport Matroid
-from .set_system cimport SetSystem
+from sage.matroids.matroid cimport Matroid
+from sage.matroids.set_system cimport SetSystem
 from sage.data_structures.bitset_base cimport *
 
 cdef class BasisExchangeMatroid(Matroid):

src/sage/matroids/basis_matroid.pxd

@@ -1,6 +1,6 @@
 from sage.data_structures.bitset cimport bitset_t
-from .basis_exchange_matroid cimport BasisExchangeMatroid
-from .set_system cimport SetSystem
+from sage.matroids.basis_exchange_matroid cimport BasisExchangeMatroid
+from sage.matroids.set_system cimport SetSystem
 
 cdef class BasisMatroid(BasisExchangeMatroid):
     cdef bitset_t _bb

src/sage/matroids/basis_matroid.pyx

@@ -69,10 +69,10 @@ from itertools import combinations
 from sage.data_structures.bitset_base cimport *
 from sage.misc.decorators import rename_keyword
 from sage.structure.richcmp cimport rich_to_bool
-from .matroid cimport Matroid
-from .basis_exchange_matroid cimport BasisExchangeMatroid
-from .set_system cimport SetSystem
-from .utilities import cmp_elements_key
+from sage.matroids.matroid cimport Matroid
+from sage.matroids.basis_exchange_matroid cimport BasisExchangeMatroid
+from sage.matroids.set_system cimport SetSystem
+from sage.matroids.utilities import cmp_elements_key
 
 # class of general matroids, represented by their list of bases
 

src/sage/matroids/circuit_closures_matroid.pyx

@@ -60,9 +60,9 @@ AUTHORS:
 
 from cpython.object cimport Py_EQ, Py_NE
 from sage.structure.richcmp cimport rich_to_bool, richcmp
-from .matroid cimport Matroid
-from .set_system cimport SetSystem
-from .utilities import setprint_s, cmp_elements_key
+from sage.matroids.matroid cimport Matroid
+from sage.matroids.set_system cimport SetSystem
+from sage.matroids.utilities import setprint_s, cmp_elements_key
 
 cdef class CircuitClosuresMatroid(Matroid):
     r"""

src/sage/matroids/circuits_matroid.pxd

@@ -1,5 +1,5 @@
-from .matroid cimport Matroid
-from .set_system cimport SetSystem
+from sage.matroids.matroid cimport Matroid
+from sage.matroids.set_system cimport SetSystem
 
 cdef class CircuitsMatroid(Matroid):
     cdef frozenset _groundset

src/sage/matroids/circuits_matroid.pyx

@@ -32,8 +32,8 @@ AUTHORS:
 
 from cpython.object cimport Py_EQ, Py_NE
 from sage.structure.richcmp cimport rich_to_bool, richcmp
-from .matroid cimport Matroid
-from .set_system cimport SetSystem
+from sage.matroids.matroid cimport Matroid
+from sage.matroids.set_system cimport SetSystem
 
 cdef class CircuitsMatroid(Matroid):
     r"""

src/sage/matroids/constructor.py

@@ -112,13 +112,13 @@
 from sage.rings.finite_rings.finite_field_base import FiniteField
 import sage.matroids.matroid
 import sage.matroids.basis_exchange_matroid
-from .rank_matroid import RankMatroid
-from .circuits_matroid import CircuitsMatroid
-from .flats_matroid import FlatsMatroid
-from .circuit_closures_matroid import CircuitClosuresMatroid
-from .basis_matroid import BasisMatroid
-from .linear_matroid import LinearMatroid, RegularMatroid, BinaryMatroid, TernaryMatroid, QuaternaryMatroid
-from .graphic_matroid import GraphicMatroid
+from sage.matroids.rank_matroid import RankMatroid
+from sage.matroids.circuits_matroid import CircuitsMatroid
+from sage.matroids.flats_matroid import FlatsMatroid
+from sage.matroids.circuit_closures_matroid import CircuitClosuresMatroid
+from sage.matroids.basis_matroid import BasisMatroid
+from sage.matroids.linear_matroid import LinearMatroid, RegularMatroid, BinaryMatroid, TernaryMatroid, QuaternaryMatroid
+from sage.matroids.graphic_matroid import GraphicMatroid
 import sage.matroids.utilities
 
 

src/sage/matroids/dual_matroid.py

@@ -51,7 +51,7 @@
 #                  https://www.gnu.org/licenses/
 # ****************************************************************************
 
-from .matroid import Matroid
+from sage.matroids.matroid import Matroid
 
 class DualMatroid(Matroid):
     r"""

src/sage/matroids/flats_matroid.pxd

@@ -1,5 +1,5 @@
-from .matroid cimport Matroid
-from .set_system cimport SetSystem
+from sage.matroids.matroid cimport Matroid
+from sage.matroids.set_system cimport SetSystem
 
 cdef class FlatsMatroid(Matroid):
     cdef frozenset _groundset

src/sage/matroids/flats_matroid.pyx

@@ -32,8 +32,8 @@ AUTHORS:
 
 from cpython.object cimport Py_EQ, Py_NE
 from sage.structure.richcmp cimport rich_to_bool, richcmp
-from .matroid cimport Matroid
-from .set_system cimport SetSystem
+from sage.matroids.matroid cimport Matroid
+from sage.matroids.set_system cimport SetSystem
 from sage.combinat.posets.lattices import LatticePoset, FiniteLatticePoset
 
 cdef class FlatsMatroid(Matroid):

src/sage/matroids/graphic_matroid.pxd

@@ -1,4 +1,4 @@
-from .matroid cimport Matroid
+from sage.matroids.matroid cimport Matroid
 from sage.graphs.generic_graph_pyx cimport GenericGraph_pyx
 
 cdef class GraphicMatroid(Matroid):

src/sage/matroids/graphic_matroid.pyx

@@ -86,9 +86,9 @@ AUTHORS:
 #                  https://www.gnu.org/licenses/
 # ****************************************************************************
 
-from .matroid cimport Matroid
+from sage.matroids.matroid cimport Matroid
 from copy import copy, deepcopy
-from .utilities import newlabel, split_vertex, sanitize_contractions_deletions
+from sage.matroids.utilities import newlabel, split_vertex, sanitize_contractions_deletions
 from itertools import combinations
 from sage.rings.integer import Integer
 from sage.sets.disjoint_set cimport DisjointSet_of_hashables
@@ -452,7 +452,7 @@ cdef class GraphicMatroid(Matroid):
             sage: loads(dumps(M))
             Graphic matroid of rank 9 on 15 elements
         """
-        from .unpickling import unpickle_graphic_matroid
+        from sage.matroids.unpickling import unpickle_graphic_matroid
         data = (self._G, self.get_custom_name())
         version = 0
         return unpickle_graphic_matroid, (version, data)

src/sage/matroids/minor_matroid.py

@@ -74,8 +74,8 @@
 #  the License, or (at your option) any later version.
 #                  https://www.gnu.org/licenses/
 # ****************************************************************************
-from .matroid import Matroid
-from .utilities import setprint_s
+from sage.matroids.matroid import Matroid
+from sage.matroids.utilities import setprint_s
 
 
 class MinorMatroid(Matroid):

src/sage/matroids/rank_matroid.py

@@ -57,7 +57,7 @@ class ``RankMatroid``. All that is required is a groundset and a function that
 #  the License, or (at your option) any later version.
 #                  https://www.gnu.org/licenses/
 # ****************************************************************************
-from .matroid import Matroid
+from sage.matroids.matroid import Matroid
 
 
 class RankMatroid(Matroid):