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-rw-r--r--Lib/email/Message.py4
1 files changed, 4 insertions, 0 deletions
diff --git a/Lib/email/Message.py b/Lib/email/Message.py
index 512a0e9..00efbcc 100644
--- a/Lib/email/Message.py
+++ b/Lib/email/Message.py
@@ -227,12 +227,16 @@ class Message:
These will be sorted in the order they appeared in the original
message, and may contain duplicates. Any fields deleted and
re-inserted are alwyas appended to the header list.
+
+ If no such fields exist, failobj is returned (defaults to None).
"""
values = []
name = name.lower()
for k, v in self._headers:
if k.lower() == name:
values.append(v)
+ if not values:
+ return failobj
return values
def add_header(self, _name, _value, **_params):