isNum type to Rational not Number

music21/common/classTools.py

@@ -40,14 +40,14 @@ def isInt(usrData: t.Any) -> t.TypeGuard[int]:
     return isinstance(usrData, int) and usrData is not True and usrData is not False
 
 
-def isNum(usrData: t.Any) -> t.TypeGuard[numbers.Number]:
+def isNum(usrData: t.Any) -> t.TypeGuard[numbers.Rational]:
     '''
     check if usrData is a number (float, int, long, Decimal),
-    return boolean
+    return boolean and if True casts the value as a Rational number
 
-    unlike `isinstance(usrData, Number)` does not return True for `True, False`.
+    unlike `isinstance(usrData, Rational)` does not return True for `True, False`.
 
-    Does not use `isinstance(usrData, Number)` which is 2-6 times slower
+    Does not use `isinstance(usrData, Rational)` which is 2-6 times slower
     than calling this function (except in the case of Fraction, when
     it's 6 times faster, but that's rarer).  (6 times slower on Py3.4, now
     only 2x slower in Python 3.10)

music21/interval.py

@@ -1676,7 +1676,7 @@ def __init__(self,
 
         if isinstance(generic, GenericInterval):
             self.generic = generic
-        elif common.isNum(generic) or isinstance(generic, str):
+        elif common.isInt(generic) or isinstance(generic, str):
             self.generic = GenericInterval(generic)
         else:  # pragma: no cover
             # too rare to cover.

music21/musicxml/xmlToM21.py

@@ -4732,7 +4732,9 @@ def xmlBarline(self, mxBarline):
             # not complete
 
             # TODO: this should also filter by number (in theory.)
-            rbSpanners = self.spannerBundle.getByClass(spanner.RepeatBracket).getByCompleteStatus(False)
+            rbSpanners = self.spannerBundle.getByClass(
+                spanner.RepeatBracket
+            ).getByCompleteStatus(False)
             # if we have no complete bracket objects, must start a new one
             if not rbSpanners:
                 # create with this measure as the object

music21/note.py

@@ -456,7 +456,7 @@ def number(self) -> int:
 
     @number.setter
     def number(self, value: int) -> None:
-        if not common.isNum(value):
+        if not common.isInt(value):
             raise LyricException('Number best be number')
         self._number = value
 

music21/spanner.py

@@ -20,7 +20,7 @@
 '''
 from __future__ import annotations
 
-from collections.abc import Collection, Sequence, Iterable
+from collections.abc import Sequence, Iterable
 import copy
 import typing as t
 import unittest