Fix closes Issue6090 - Raise a ValueError, instead of failing with unrelated
exceptions, when a document with timestamp earlier than 1980 is provided to
zipfile. Patch contributed by Petri Lehtinen.
diff --git a/Lib/zipfile.py b/Lib/zipfile.py
index f876f42..d9181f2 100644
--- a/Lib/zipfile.py
+++ b/Lib/zipfile.py
@@ -290,6 +290,10 @@
self.filename = filename # Normalized file name
self.date_time = date_time # year, month, day, hour, min, sec
+
+ if date_time[0] < 1980:
+ raise ValueError('ZIP does not support timestamps before 1980')
+
# Standard values:
self.compress_type = ZIP_STORED # Type of compression for the file
self.comment = "" # Comment for each file