remove default charset encoding spec to allow system spec

Author: dimitri-yatsenko

datajoint/connection.py

@@ -92,11 +92,12 @@ def connect(self):
         """
         with warnings.catch_warnings():
             warnings.filterwarnings('ignore', '.*deprecated.*')
-            self._conn = client.connect(init_command=self.init_fun,
-                                        sql_mode="NO_ZERO_DATE,NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO,"
-                                                 "STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION",
-                                        charset=config['connection.charset'],
-                                        **self.conn_info)
+            self._conn = client.connect(
+                init_command=self.init_fun,
+                sql_mode="NO_ZERO_DATE,NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO,"
+                         "STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION",
+                charset=config['connection.charset'],
+                **self.conn_info)
 
     def register(self, schema):
         self.schemas[schema.database] = schema

datajoint/schema.py

@@ -140,7 +140,6 @@ def repl(s):
                       for k, v in module_lookup.items()),
             body))
 
-
     def spawn_missing_classes(self):
         """
         Creates the appropriate python user relation classes from tables in the database and places them

datajoint/settings.py

@@ -33,7 +33,7 @@
     'database.user': None,
     'database.port': 3306,
     'connection.init_function': None,
-    'connection.charset': 'utf8',
+    'connection.charset': '',   # pymysql uses '' as default
     'database.reconnect': False,
     'loglevel': 'INFO',
     'safemode': True,