Hi all I have just wrote a small script to compare the speed of list addition methods. heres what it looks like.
#listadditioncompare.py #compare the speeds of 3 different type of list element addition import time def method(TYPE): l1 = []; l2 = []; l3 = []; if TYPE == 1: finish = 0; start = 0; start = time.time(); for y in range(0,3): for x in range(0,10000): l1 = l1 + [x];# type 1 l1 = []; finish += time.time(); averageFinish = finish/3; #m = float(finish-start); print "Method 1 done in (average finish time(out of 3)) - %.10f" %(averageFinish-start); if TYPE == 2: finish = 0; start = 0; start = time.time(); for y in range(0,3): for x in range(0,10000): l2 = l2 + [x];# type 2 l2 = []; finish += time.time(); averageFinish = finish/3; #m = float(finish-start); print "Method 2 done in (average finish time(out of 3)) - %.10f" %(averageFinish-start); if TYPE == 3: finish = 0; start = 0; start = time.time(); for y in range(0,3): for x in range(0,10000): l3 += [x];# type 3 l3 = []; finish += time.time(); averageFinish = finish/3; #m = float(finish-start); print "Method 3 done in (average finish time(out of 3)) - %.10f" %(averageFinish-start); print "@@@@@@@"; method(1); method(2); method(3); print "@@@@@@@"; So far i think it does good. Running it 3 times gives >>> @@@@@@@ Method 1 done in (average finish time(out of 3)) - 1.1560001373 Method 2 done in (average finish time(out of 3)) - 1.1619999409 Method 3 done in (average finish time(out of 3)) - 0.0106666088 @@@@@@@ >>> @@@@@@@ Method 1 done in (average finish time(out of 3)) - 1.1610000134 Method 2 done in (average finish time(out of 3)) - 1.1253333092 Method 3 done in (average finish time(out of 3)) - 0.0156667233 @@@@@@@ >>> >>> @@@@@@@ Method 1 done in (average finish time(out of 3)) - 1.1563334465 Method 2 done in (average finish time(out of 3)) - 1.1716668606 Method 3 done in (average finish time(out of 3)) - 0.0106668472 @@@@@@@ >>> So i can assume that type 3 ( l3 += [x] ) addition is the fastest . Is there anything i am doing wrong?? Also could this code be beautified && shortened?? Thanks. -- cheers, Ishwor Gurung -- http://mail.python.org/mailman/listinfo/python-list