in pythoneach module that is loaded has its own symbol table the symbol table is given the name of that module this waymodules act as namespaces we can have multiple symbols called ageas long as they exist in different symbol tables to access either onewe access it through the appropriate symbol tablesummary in this we have looked at hash tables we looked at how to write hashing function to turn string data into integer data then we looked at how we can use hashed keys to quickly and efficiently look up the value that corresponds to key we also noticed how hashing functions are not perfect and that several strings can end up having the same hash value this led us to look at collision resolution strategies we looked at growing hash table and how to look at the load factor of the table in order to determine exactly when to grow the hash in the last section of the we studied symbol tableswhich often are built using hash tables symbol tables allow compiler or an interpreter to look up symbol (variablefunctionclassand so onthat has been defined and retrieve all information about it in the next we will talk about graphs and other algorithms