File management using openpyxl

When using openpyxl to load workbooks, ensure that your excel file is saved in the same folder as the .py file you are developing.

import openpyxl, pprintprint('Opening workbook... ')wb = openpyxl.load_workbook('censuspopdata.xlsx')sheet = wb.get_sheet_by_name('Population by Census Tract')

Otherwise, the following "file not found" error will result:

 "FileNotFoundError: [Errno 2] No such file or directory: 'censuspopdata.xlsx'"