Issue with a Traceback error in Python

Question

I'm new to programming with python (for class) and just can't seem to figure this one out. Here is my code:

department = raw_input
salesQuarterOneThisYear = input
salesQuarterTwoThisYear = input
salesQuarterThreeThisYear = input
salesQuarterFourThisYear = input
salesQuarterOneLastYear = input
salesQuarterTwoLastYear = input
salesQuarterThreeLastYear = input
salesQuarterFourLastYear = input
QUIT = 'ZZZZ'
print 'Enter department name or', QUIT,'to quit:'
raw_input('')

while department != QUIT:
    print 'Enter sales for first quarter this year:'
    salesQuarter1ThisYear = input('')
    print 'Enter sales for second quarter this year:'
    salesQuarter2ThisYear = input('')
    print 'Enter sales for third quarter this year:'
    salesQuarter3ThisYear = input('')
    print 'Enter sales for fourth quarter this year:'
    salesQuarter4ThisYear = input('')
    print 'Enter sales for first quarter last year:'
    salesQuarter1LastYear = input('')
    print 'Enter sales for second quarter last year'
    salesQuarter2LastYear = input('')
    print 'Enter sales for third quarter last year:'
    salesQuarter3LastYear = input('')
    print 'Enter sales for fourth quarter last year:'
    salesQuarter4LastYear = input
    total_this_year = salesQuarterOneThisYear + salesQuarterTwoThisYear + salesQuarterThreeThisYear + salesQuarterFourThisYear
    total_last_year = salesQuarterOneLastYear + salesQuarterTwoLastYear + salesQuarterThreeLastYear + salesQuarterFourLastYear
    print 'Total this year = ',total_this_year
    print 'Total last year = ',total_last_year
    if total_this_year is total_last_year:
        print 'Status = Same'
    if total_this_year > total_last_year:
        print 'Status = Higher'
    if total_this_year < total_last_year:
        print 'Status = Lower'

    print

    print 'Department: ',department
    if total_this_year is total_last_year:
        print 'Status = Same'
    if total_this_year > total_last_year:
        print 'Status = Higher'
    if total_this_year < total_last_year:
        print 'Status = Lower'

    print 'Enter department name or', QUIT,'to quit:'
    raw_input('')

The error I receive is this:

  File ..., line 31, in <module>
    total_this_year = salesQuarterOneThisYear + salesQuarterTwoThisYear + salesQuarterThreeThisYear + salesQuarterFourThisYear
TypeError: unsupported operand type(s) for +: 'builtin_function_or_method' and 'builtin_function_or_method'

Can you please help me with what I'm doing wrong?

Since you're using python 2.7, I wouldn't use input() for this, since it evaluates arbitrary code. Example. Instead, use int(raw_input(...)), float(raw_input(...)), str(raw_input(...)), etc — KevinOrr
– KevinOrr, Commented Mar 21, 2015 at 23:16
Thanks Kevin! Question, what are the differences between input(), int(raw_input(...)), float(raw_input(...)), & str(raw_input(...)) — Patrick
– Patrick, Commented Mar 21, 2015 at 23:51
Think of input() as taking a line of code from the user and evaluating it, much like the python console. Basically anything that you can put after a some_variable = in python is acceptable. raw_input() gives you the raw string that the user entered. int() will convert that to an integer if it can (otherwise it'll raise a ValueError), and float() will convert the string to a floating-point number (read: a number with a decimal point). I'm not sure why I included str() in there now, since that'l just convert the string ... to a string. — KevinOrr
– KevinOrr, Commented Mar 22, 2015 at 17:24
If you want just the raw string (like if you're looking for a name or something), use name_or_whatever = raw_input('What is thy name?'). — KevinOrr
– KevinOrr, Commented Mar 22, 2015 at 17:24

Martijn Pieters · Accepted Answer · 2015-03-21 22:48:30Z

1

You never called input for quarter four:

salesQuarter4LastYear = input

That assigns the function object, not a string. Call the function instead:

salesQuarter4LastYear = input()

answered Mar 21, 2015 at 22:48

Martijn Pieters

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