import sys; print('%s %s' % (sys.executable or sys.platform, sys.version)) C:\Python27\python.exe 2.7.2 |EPD 7.1-2 (32-bit)| (default, Jul 3 2011, 15:13:59) [MSC v.1500 32 bit (Intel)] fred = 3 print fred 3 fred = 6 print fred 6 type(fred) print "fred" fred 5 + 2 7 7/3 2 5 + fred 11 print fred 6 pow(2,3) + round(1.6) 10.0 def sum(a, b): return a + b sum(4,2) 6 print sum(4,2) 6 60 + 25 * 9 285 60 + 25 * 99 2535 numloads = 10 60 + 25 * numloads 310 60 + 25 * (numloads - 1) 285 def laundryTime(numloads): return 60 + 25 * (numloads - 1) laundry(100) Traceback (most recent call last): File "", line 1, in NameError: name 'laundry' is not defined laundryTime(100) 2535 laundryTime(10) 285