EXAMPLE considerations

python/rateslib/default.py

@@ -1,7 +1,6 @@
 from __future__ import annotations
 
 import os
-import sys
 from datetime import datetime
 from enum import Enum
 from typing import Any

python/rateslib/scheduling.py

@@ -11,6 +11,8 @@
 
 from rateslib import defaults
 from rateslib.calendars import (
+    CalInput,
+    CalTypes,
     _adjust_date,
     _get_modifier,
     _get_roll,
@@ -22,8 +24,6 @@
     _is_som,
     add_tenor,
     get_calendar,
-    CalInput,
-    CalTypes
 )
 from rateslib.default import NoInput, _drb
 
@@ -320,7 +320,6 @@ def __init__(
 
         self._attribute_schedules()
 
-
     def _dual_sided_stub_parsing(self, front_stub, back_stub, roll):
         """This is called when the provided `stub` argument implies dual sided stubs."""
         if front_stub is NoInput.blank and back_stub is NoInput.blank:
@@ -1463,12 +1462,14 @@ def _raise_date_value_error(effective, termination, front_stub, back_stub, roll,
         f"`roll`: {roll},\n"
     )
 
+
 def _validate_frequency(frequency: str) -> str:
     frequency = frequency.upper()
     if frequency not in ["M", "B", "Q", "T", "S", "A", "Z"]:
         raise ValueError("`frequency` must be in {M, B, Q, T, S, A, Z}.")
     return frequency
 
+
 def _validate_effective(
     effective: datetime | str,
     eval_mode: str,
@@ -1506,6 +1507,7 @@ def _validate_effective(
     else:
         return effective
 
+
 def _validate_termination(
     termination: datetime | str,
     effective: datetime,
@@ -1549,10 +1551,9 @@ def _validate_termination(
         raise ValueError("Schedule `termination` must be after `effective`.")
     return termination_
 
+
 def _validate_stub(
-    stub: str | NoInput,
-    front_stub: datetime | NoInput,
-    back_stub: datetime | NoInput
+    stub: str | NoInput, front_stub: datetime | NoInput, back_stub: datetime | NoInput
 ) -> str:
     """
     Sets a default type stub depending upon the `front_stub` and `back_stub` values.
@@ -1571,6 +1572,7 @@ def _validate_stub(
         stub_ = stub.upper()
     return stub_
 
+
 # Licence: Creative Commons - Attribution-NonCommercial-NoDerivatives 4.0 International
 # Commercial use of this code, and/or copying and redistribution is prohibited.
 # Contact rateslib at gmail.com if this code is observed outside its intended sphere.