refactor: extract BedStrand to avoid circular import

pybedlite/__init__.py

@@ -57,7 +57,7 @@
 from pybedlite.bed_source import BedSource
 from pybedlite.bed_source import BedPath
 from pybedlite.bed_record import BedRecord
-from pybedlite.bed_record import BedStrand
+from pybedlite.bed_strand import BedStrand
 
 
 def reader(path: BedPath) -> "BedSource":

pybedlite/bed_record.py

@@ -21,18 +21,13 @@
 from typing import Type
 
 from pybedlite.overlap_detector import Interval
+from pybedlite.bed_strand import BedStrand
 
 
 """Maximum BED fields that can be present in a well formed BED file written to specification"""
 MAX_BED_FIELDS: int = 12
 
 
-@enum.unique
-class BedStrand(enum.Enum):
- Positive = "+"
- Negative = "-"
-
-
 @attr.s(frozen=True, auto_attribs=True, kw_only=True, slots=True)
 class BedRecord:
  """Lightweight class for storing BED records. A more comprehensive description of BED format

pybedlite/bed_source.py

@@ -10,6 +10,7 @@
  - :class:`~pybedtools.bed_source.BedSource` -- Reader class for parsing BED files and iterate
  over their contained records
 """
+
 import io
 from typing import IO
 from typing import Optional
@@ -27,7 +28,7 @@
 from typing import Dict
 from typing import Any
 
-from pybedlite.bed_record import BedStrand
+from pybedlite.bed_strand import BedStrand
 from pybedlite.bed_record import BedRecord
 
 """The classes that should be treated as file-like classes"""

pybedlite/bed_strand.py

@@ -0,0 +1,11 @@
+"""
+The BedStrand enum.
+"""
+
+import enum
+
+
+@enum.unique
+class BedStrand(enum.Enum):
+ Positive = "+"
+ Negative = "-"

pybedlite/overlap_detector.py

@@ -50,7 +50,7 @@
 import attr
 import cgranges as cr
 
-from pybedlite.bed_record import BedStrand
+from pybedlite.bed_strand import BedStrand
 from pybedlite.bed_source import BedSource
 
 

pybedlite/tests/test_pybedlite.py

@@ -8,7 +8,7 @@
 from pybedlite.bed_writer import BedWriter
 from pybedlite.bed_source import BedSource
 from pybedlite.bed_record import BedRecord
-from pybedlite.bed_record import BedStrand
+from pybedlite.bed_strand import BedStrand
 
 
 @pytest.fixture