gh-101825: mention, that as_integer_ratio() output is normalized

Author: skirpichev

Doc/library/stdtypes.rst

@@ -602,7 +602,7 @@ class`. In addition, it provides a few more methods:
 
 .. method:: int.as_integer_ratio()
 
-   Return a pair of integers whose ratio is exactly equal to the original
+   Return a pair of integers whose ratio is equal to the original
    integer and with a positive denominator. The integer ratio of integers
    (whole numbers) is always the integer as the numerator and ``1`` as the
    denominator.
@@ -624,7 +624,7 @@ class`. float also has the following additional methods.
 .. method:: float.as_integer_ratio()
 
    Return a pair of integers whose ratio is exactly equal to the
-   original float and with a positive denominator.  Raises
+   original float, is in lowest terms and with a positive denominator.  Raises
    :exc:`OverflowError` on infinities and a :exc:`ValueError` on
    NaNs.
 

Lib/fractions.py

@@ -320,10 +320,9 @@ def is_integer(self):
         return self._denominator == 1
 
     def as_integer_ratio(self):
-        """Return the integer ratio as a tuple.
+        """Return a pair of integers, whose ratio is equal to the original Fraction.
 
-        Return a tuple of two integers, whose ratio is equal to the
-        Fraction and with a positive denominator.
+        The ratio is in lowest terms and with a positive denominator.
         """
         return (self._numerator, self._denominator)
 

Objects/floatobject.c

@@ -1546,12 +1546,10 @@ float_fromhex(PyTypeObject *type, PyObject *string)
 /*[clinic input]
 float.as_integer_ratio
 
-Return integer ratio.
+Return a pair of integers, whose ratio is exactly equal to the original float.
 
-Return a pair of integers, whose ratio is exactly equal to the original float
-and with a positive denominator.
-
-Raise OverflowError on infinities and a ValueError on NaNs.
+The ratio is in lowest terms and with a positive denominator.  Raise
+OverflowError on infinities and a ValueError on NaNs.
 
 >>> (10.0).as_integer_ratio()
 (10, 1)

Objects/longobject.c

@@ -6020,10 +6020,9 @@ int_bit_count_impl(PyObject *self)
 /*[clinic input]
 int.as_integer_ratio
 
-Return integer ratio.
+Return a pair of integers, whose ratio is equal to the original int.
 
-Return a pair of integers, whose ratio is exactly equal to the original int
-and with a positive denominator.
+The ratio is in lowest terms and with a positive denominator.
 
 >>> (10).as_integer_ratio()
 (10, 1)