Followup to issue #14157: respect the relative ordering of values produced by time.strptime().

Patch by Hynek.

1 files changed, 8 insertions, 0 deletions

diff --git a/Lib/_strptime.py b/Lib/_strptime.py
index 0106e914ae..fa06376992 100644
--- a/Lib/_strptime.py
+++ b/Lib/_strptime.py
@@ -444,8 +444,10 @@ def _strptime(data_string, format="%a %b %d %H:%M:%S %Y"):
                     else:
                         tz = value
                         break
+    leap_year_fix = False
     if year is None and month == 2 and day == 29:
         year = 1904  # 1904 is first leap year of 20th century
+        leap_year_fix = True
     elif year is None:
         year = 1900
     # If we know the week of the year and what day of that week, we can figure
@@ -476,6 +478,12 @@ def _strptime(data_string, format="%a %b %d %H:%M:%S %Y"):
     else:
         gmtoff = None
 
+    if leap_year_fix:
+        # the caller didn't supply a year but asked for Feb 29th. We couldn't
+        # use the default of 1900 for computations. We set it back to ensure
+        # that February 29th is smaller than March 1st.
+        year = 1900
+
     return (year, month, day,
             hour, minute, second,
             weekday, julian, tz, gmtoff, tzname), fraction