Hi, Sadly they really are .xls files rather than the more slightly more sane .xlsx.
Thanks! — Chris > On 20 Feb 2023, at 22:39, Rebecca N. Palmer <rebecca_pal...@zoho.com> wrote: > > Is the file you're trying to open .xlsx or .xls? Do you have > python3-openpyxl installed? If .xlsx and no, try installing it. > > (python3-)xlrd 2.0+ can only open .xls files, not .xlsx. Hence, pandas 1.5+ > read_excel() always uses (python3-)openpyxl for .xlsx files. python3-pandas > already Recommends python3-openpyxl. (This intentionally isn't a hard > Depends because pandas can be used on other data formats without it, but the > error message probably should point to openpyxl not xlrd.)