payhours.py

import datetime,colorama

REQUIRED_WORKING_HOURS_EACH_DAY = 9

now = datetime.datetime.now()
today = now.today().day
restDays = [4,5]
businessdays = 0
vacations = 0
lastday = 0


while True:      
    try:
        alreadyDone = float(raw_input("Enter number of hours already done: \n"))
    except Exception:
        print "Invalid number!"
        continue
    break


while True:
    try:
        vacations = int(raw_input("Enter number of day-offs/holidays/vacations: \n"))
    except Exception:
        print "Invalid number!"
        continue
    break

for i in range(1, 32):
    try:
        thisdate = datetime.date(now.year, now.month, i)
        lastday = i
    except(ValueError):
        break
    if thisdate.weekday() not in restDays:
        businessdays += 1
total = (businessdays - vacations) * REQUIRED_WORKING_HOURS_EACH_DAY

dayleft = (lastday - today) + 1

for i in range(1, dayleft):
    try:
        date = datetime.date(now.year, now.month, i)
    except(ValueError):
        break
    if date.weekday() in restDays:
        dayleft -= 1

print "---------------------------"
print "Total number of hours to work this month: {}".format(total)
print "Number of hours already done this month: {}".format(alreadyDone)
print "Number of hours left to work this month: {}".format(total-alreadyDone)
print "Number of days left to work this month: {}".format(dayleft)
print "Average of hours left to work each day this month: {}".format((total-alreadyDone)/float(dayleft))
print "---------------------------"
raw_input("Press any key to exit...")