(self, schemaName, modeName = None)
return True
check schema exists
		@type schemaName:	   str
		@type modeName:		 str
		@rtype:				 bool
check schema exists
check schema exists
def isSchemaExist(self, schemaName, modeName = None):
		""" check schema exists
		@type schemaName:	   str
		@type modeName:		 str
		@rtype:				 bool
		"""
		if schemaName not in self.schemaList:
			return False

		if modeName not in self.schemaList[schemaName].modes:
			return False
		
		return True
def isSchemaExist ( self , schemaName , modeName = None ) : if schemaName not in self . schemaList : return False if modeName not in self . schemaList [ schemaName ] . modes : return False return True