fix: retry immediately on a failure inside executemany. #1010

Author: nedbat

coverage/sqldata.py

@@ -1103,7 +1103,13 @@ def executemany(self, sql, data):
         if self.debug:
             data = list(data)
             self.debug.write("Executing many {!r} with {} rows".format(sql, len(data)))
-        return self.con.executemany(sql, data)
+        try:
+            return self.con.executemany(sql, data)
+        except Exception:
+            # In some cases, an error might happen that isn't really an
+            # error.  Try again immediately.
+            # https://github.com/nedbat/coveragepy/issues/1010
+            return self.con.executemany(sql, data)
 
     def executescript(self, script):
         """Same as :meth:`python:sqlite3.Connection.executescript`."""