docstring

jbrockmendel · jbrockmendel · commit 2d1b25b735c0 · 2025-07-17T08:02:00.000-07:00
diff --git a/pandas/_libs/tslibs/period.pyx b/pandas/_libs/tslibs/period.pyx
@@ -1626,6 +1626,10 @@ DIFFERENT_FREQ = ("Input has different freq={other_freq} "
 
 
 class IncompatibleFrequency(TypeError):
+    """
+    Raised when trying to compare or operate between Periods with different
+    frequencies.
+    """
     pass
 
 
