Errata

 Copies purchased prior to Sep 2020 would have the following errors

1. Page 11 - please read

print(LastName, FirstName, Address) instead of

print(LastName, FirstName, Employer)

2. Page 30 - please read

tax = (salary + comm) * taxRate instead of

tax = (salary + comm) * 0.10

3. Page 53 - please read

dfOS2 =dfOS[Cols] instead of

dfOS2 =df[Cols]