contents the openpyxl workbook class the openpyxl worksheet objects working with cells sample excel file creation application loading workbook from an excel file online resources exercises regular expressions in python introduction what are regular expressions regular expression patterns pattern metacharacters special sequences sets the python re module working with python regular expressions using raw strings simple example the match object the search(function the match(function the difference between matching and searching the findall(function the finditer(function the split(function the sub(function the compile(function online resources exercises part database access introduction to databases introduction what is databasedata relationships the database schema sql and databases data manipulation language transactions in databases further reading