<human>:  How to save Xlsxwriter file in certain path?
<bot>: Here is some code to save xlsxwriter file in 'app/smth1/smth2/Expenses01.xlsx' path and assign to variable `workbook`

workbook = xlsxwriter.Workbook('app/smth1/smth2/Expenses01.xlsx')

#Warning: this code generation is experimental. Please inspect the code for any bugs before executing.