bpo-34215: Clarify IncompleteReadError message when "expected" is None (GH-21925)
Co-Authored-By: Tyler Bell <mrbell321@gmail.com>
diff --git a/Lib/asyncio/exceptions.py b/Lib/asyncio/exceptions.py
index e03602e..f07e448 100644
--- a/Lib/asyncio/exceptions.py
+++ b/Lib/asyncio/exceptions.py
@@ -34,8 +34,9 @@ class IncompleteReadError(EOFError):
- expected: total number of expected bytes (or None if unknown)
"""
def __init__(self, partial, expected):
+ r_expected = 'undefined' if expected is None else repr(expected)
super().__init__(f'{len(partial)} bytes read on a total of '
- f'{expected!r} expected bytes')
+ f'{r_expected} expected bytes')
self.partial = partial
self.expected = expected