Read records from CSV file and print report - python-3.x

Question

I have been working on a program for a week now, but have been unable to get it to work according to the guidelines.
In this program (payroll.py), I have to open the CSV data file (employees.csv), read the records in the file, and produce a payroll report using the functions in payroll.py. The output should be printed, not written to a separate output file, and should end up looking like this:
LastName FirstName Hours RegHours OTHours RegPay OTPay GrossPay Deductions NetPay
Hightower Michael 42.0 40.0 2.0 400.00 30.00 430.00 107.07 322.93
Jackson Samuel 53.0 40.0 13.0 506.00 246.68 752.67 187.42 565.25
Jones Catherine 35.0 35.0 0.00 680.05 0.00 680.05 169.33 510.72
The payroll program works just fine on its own (without calling the CSV file), but when I try to call the file (using "from csv import reader"), one of two things happens:
1) I can call the first three columns (last name, first name, and hours), but I am unable to "insert" the additional columns (I get an index error because, of course, those columns don't exist in the original CSV file), or
2) The program only pulls up one entire record, which happens to be the last record in the CSV file.
Any guidance on how to accomplish this would be greatly appreciated. Thank you.
Here is the code for payroll.py:
def main() :
employeeFirstName, employeeLastName = employeeFullName()
employeePayRate, employeeHoursWorked = employeePay()
employeeRegularHours, employeeOvertimeHours = calculateRegularHours(employeeHoursWorked)
employeeOvertimeHours = calculateOvertimeHours(employeeHoursWorked)
employeeTotalHours = calculateTotalHours(employeeRegularHours, employeeOvertimeHours)
regularPayAmount = calculateRegularPay(employeePayRate, employeeRegularHours)
overtimePayAmount = calculateOvertimePay(employeePayRate, employeeOvertimeHours)
grossPayAmount = calculateGrossPay(regularPayAmount, overtimePayAmount)
federalTaxWithheld = calculateFederalTax(grossPayAmount)
stateTaxWithheld = calculateStateTax(grossPayAmount)
medicareTaxWithheld = calculateMedicareTax(grossPayAmount)
socSecTaxWithheld = calculateSocSecTax(grossPayAmount)
totalTaxesWithheld = calculateTotalTaxes(federalTaxWithheld, stateTaxWithheld, medicareTaxWithheld, socSecTaxWithheld)
netPayAmount = calculateNetPay(grossPayAmount, totalTaxesWithheld)
payrollSummaryReport(employeeFirstName, employeeLastName, employeePayRate, employeeRegularHours, employeeOvertimeHours, employeeTotalHours, regularPayAmount, overtimePayAmount, grossPayAmount, federalTaxWithheld, stateTaxWithheld, medicareTaxWithheld, socSecTaxWithheld, totalTaxesWithheld, netPayAmount)
def employeeFullName() :
employeeFirstName = str(input("Enter the employee's first name: "))
employeeLastName = str(input("Enter the employee's last name: "))
return employeeFirstName, employeeLastName
def employeePay() :
employeePayRate = float(input("Enter the employee's hourly pay rate: "))
employeeHoursWorked = float(input("Enter the employee's hours worked: "))
return employeePayRate, employeeHoursWorked
def calculateRegularHours(employeeHoursWorked) :
if employeeHoursWorked < 40 :
employeeRegularHours = employeeHoursWorked
employeeOvertimeHours = 0
else:
employeeRegularHours = 40
employeeOvertimeHours = employeeHoursWorked - 40
return employeeRegularHours, employeeOvertimeHours
def calculateOvertimeHours(employeeHoursWorked) :
if employeeHoursWorked > 40 :
employeeOvertimeHours = employeeHoursWorked - 40
else :
employeeOvertimeHours = 0
return employeeOvertimeHours
def calculateTotalHours(employeeRegularHours, employeeOvertimeHours) :
employeeTotalHours = employeeRegularHours + employeeOvertimeHours
return employeeTotalHours
def calculateRegularPay(employeePayRate, employeeHoursWorked) :
regularPayAmount = employeePayRate * employeeHoursWorked
return regularPayAmount
def calculateOvertimePay(employeePayRate, employeeOvertimeHours) :
overtimePayRate = 1.5
overtimePayAmount = (employeePayRate * employeeOvertimeHours) * overtimePayRate
return overtimePayAmount
def calculateGrossPay(regularPayAmount, overtimePayAmount) :
grossPayAmount = regularPayAmount + overtimePayAmount
return grossPayAmount
def calculateFederalTax(grossPayAmount) :
federalTaxRate = 0.124
federalTaxWithheld = grossPayAmount * federalTaxRate
return federalTaxWithheld
def calculateStateTax(grossPayAmount) :
stateTaxRate = 0.049
stateTaxWithheld = grossPayAmount * stateTaxRate
return stateTaxWithheld
def calculateMedicareTax(grossPayAmount) :
medicareTaxRate = 0.014
medicareTaxWithheld = grossPayAmount * medicareTaxRate
return medicareTaxWithheld
def calculateSocSecTax(grossPayAmount) :
socSecTaxRate = 0.062
socSecTaxWithheld = grossPayAmount * socSecTaxRate
return socSecTaxWithheld
def calculateTotalTaxes(federalTaxWithheld, stateTaxWithheld, medicareTaxWithheld, socSecTaxWithheld) :
totalTaxesWithheld = federalTaxWithheld + stateTaxWithheld + medicareTaxWithheld + socSecTaxWithheld
return totalTaxesWithheld
def calculateNetPay(grossPayAmount, totalTaxesWithheld) :
netPayAmount = grossPayAmount - totalTaxesWithheld
return netPayAmount
def payrollSummaryReport(employeeFirstName, employeeLastName, employeePayRate, employeeRegularHours, employeeOvertimeHours, employeeTotalHours, regularPayAmount, overtimePayAmount, grossPayAmount, federalTaxWithheld, stateTaxWithheld, medicareTaxWithheld, socSecTaxWithheld, totalTaxesWithheld, netPayAmount) :
print()
print("\t\t\t\t\t\tPayroll Summary Report")
print()
print("%-12s%-12s%-8s%-10s%-10s%-12s%-10s%-11s%-13s%-10s" % ("LastName", "FirstName", "Hours", "RegHours", "OTHours", "RegPay", "OTPay", "GrossPay", "Deductions", "NetPay"))
print("%-12s%-12s%-8.2f%-10.2f%-10.2f$%-11.2f$%-9.2f$%-10.2f$%-12.2f$%-10.2f" % (employeeLastName, employeeFirstName, employeeTotalHours, employeeRegularHours, employeeOvertimeHours, regularPayAmount, overtimePayAmount, grossPayAmount, totalTaxesWithheld, netPayAmount))
main ()
The CSV file (employees.csv) I need to use looks like this:
First,Last,Hours,Pay
Matthew,Hightower,42,10
Samuel,Jackson,53,12.65
Catherine,Jones,35,19.43
Charlton,Heston,52,10
Karen,Black,40,12
Sid,Caesar,38,15
George,Kennedy,25,35
Linda,Blair,42,18.6
Beverly,Garland,63,10
Jerry,Stiller,52,15
Efrem,Zimbalist,34,16
Linda,Harrison,24,14
Erik,Estrada,41,15.5
Myrna,Loy,40,14.23

Answer 1

You can treat your .csv file as a regular one. No need for reader. Here is a function that might deal with your file:
def get_data(fname):
'''
Function returns the dictionary with following
format:
{ 0 : {
"fname": "...",
"lname": "...",
"gross": "...",
},
1 : {
....,
,,,,
},
}
'''
result = {} # return value
i = 0 # you can zip range() if you want to
with open(fname, 'r') as f:
for line in f.readlines()[1:]:
result[i] = {}
tmp = line.split(",") # list of values from file
# access file values by their index, e.g.
# tmp[0] -> first name
# tmp[1] -> last name
# tmp[2] -> hours
# tmp[3] -> pay rate
# do calculations using your functions (calculateOvertimePay,
# calculateTotalHours, etc.) and store the results in dictionary
# e.g:
result[i]["fname"] = tmp[0]
result[i]["lname"] = tmp[1]
# ...
# do calculations for report
# ...
# result[i]["regular"] = calc...(....)
# result[i]["overtime"] = calc...(....)
result[i]["gross"] = calculateGrossPay(result[i]["regular"], result[i]["overtime"])
i += 1
return result
There are several thing your might want to do with your payrollSummaryReport(...) function to improve it:
replace your huge argument list with dict, or list
tinker it a bit to fit your requirements
Your might do your improvements in this way:
def payrollSummaryReport(vals) :
print()
print("\t\t\t\t\t\tPayroll Summary Report")
print()
print("%-12s%-12s%-8s%-10s%-10s%-12s%-10s%-11s%-13s%-10s" %\
("LastName", "FirstName", "Hours", "RegHours", "OTHours", "RegPay", "OTPay", "GrossPay", "Deductions", "NetPay"))
for i in vals:
print("%-12s%-12s%-8.2f%-10.2f%-10.2f$%-11.2f$%-9.2f$%-10.2f$%-12.2f$%-10.2f" %\
(vals[i]["fname"], vals[i]["lname"], vals[i]["gross"], ''' repeat for all fields '''))