Issue #14720: sqlite3: Convert datetime microseconds correctly

2 files changed, 18 insertions, 1 deletions

diff --git a/Lib/sqlite3/dbapi2.py b/Lib/sqlite3/dbapi2.py
index 6c121a5c06..1048992402 100644
--- a/Lib/sqlite3/dbapi2.py
+++ b/Lib/sqlite3/dbapi2.py
@@ -67,7 +67,7 @@ def register_adapters_and_converters():
         timepart_full = timepart.split(b".")
         hours, minutes, seconds = map(int, timepart_full[0].split(b":"))
         if len(timepart_full) == 2:
-            microseconds = int(timepart_full[1])
+            microseconds = int('{:0<6}'.format(timepart_full[1].decode()))
         else:
             microseconds = 0
 
diff --git a/Lib/sqlite3/test/regression.py b/Lib/sqlite3/test/regression.py
index 9d7b27639a..87d2cce3ec 100644
--- a/Lib/sqlite3/test/regression.py
+++ b/Lib/sqlite3/test/regression.py
@@ -302,6 +302,23 @@ class RegressionTests(unittest.TestCase):
             cur.executemany("insert into b (baz) values (?)",
                             ((i,) for i in foo()))
 
+    def CheckConvertTimestampMicrosecondPadding(self):
+        """
+        http://bugs.python.org/issue14720
+
+        The microsecond parsing of convert_timestamp() should pad with zeros,
+        since the microsecond string "456" actually represents "456000".
+        """
+
+        con = sqlite.connect(":memory:", detect_types=sqlite.PARSE_DECLTYPES)
+        cur = con.cursor()
+        cur.execute("CREATE TABLE t (x TIMESTAMP)")
+        cur.execute("INSERT INTO t (x) VALUES ('2012-04-04 15:06:00.456')")
+        cur.execute("SELECT * FROM t")
+        date = cur.fetchall()[0][0]
+
+        self.assertEqual(date, datetime.datetime(2012, 4, 4, 15, 6, 0, 456000))
+
 
 def suite():
     regression_suite = unittest.makeSuite(RegressionTests, "Check")