Fix connection attr be false on close method

Author: denis-ignatenko

tarantool/connection.py

@@ -133,11 +133,12 @@ def close(self):
         '''
         Close connection to the server
         '''
+        self.connected = False
         self._socket.close()
         self._socket = None
 
     def connect_basic(self):
-        if self.host == None:
+        if self.host is None:
             self.connect_unix()
         else:
             self.connect_tcp()
@@ -292,13 +293,12 @@ def check():  # Check that connection is alive
                 retbytes = self._sys_recv(sock_fd, buf, 1, flag)
 
                 err = 0
-                if os.name!= 'nt':
+                if os.name != 'nt':
                     err = ctypes.get_errno()
                 else:
                     err = ctypes.get_last_error()
                     self._socket.setblocking(True)
 
-
                 WWSAEWOULDBLOCK = 10035
                 if (retbytes < 0) and (err == errno.EAGAIN or
                                        err == errno.EWOULDBLOCK or
@@ -365,11 +365,12 @@ def call(self, func_name, *args):
 
         :param func_name: stored Lua function name
         :type func_name: str
-        :param args: list of function arguments
-        :type args: list or tuple
+        :param args: function arguments
+        :type args: tuple
 
         :rtype: `Response` instance
         '''
+
         assert isinstance(func_name, str)
 
         # This allows to use a tuple or list as an argument