python-programs/runningTimeOfSimpleProgram.py at master · chinmayb/python-programs · GitHub

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# Program tries to identify the runtime of creating a list using four different ways
importtimeit
fromtimeitimportTimer


# create list using concatination
deftest1():
l= []
foriinrange(3000):
l=l+ [i]


# create list using append
deftest2():
l= []
foriinrange(3000):
l.append(i)


# create list using list comprehension
deftest3():
l= [iforiinrange(3000)]


# create list using concat and generator
deftest4():
l= []
foriinxrange(3000):
l=l+ [i]


# create list using list range
deftest5():
l=list(range(3000))


# create list using list xrange
deftest6():
l=list(xrange(3000))


t1=Timer("test1()", "from __main__ import test1")
print"time taken using concatination: ", t1.timeit(number=1000), "ms"

t2=Timer("test2()", "from __main__ import test2")
print"time taken using append: ", t2.timeit(number=1000), "ms"

t3=Timer("test3()", "from __main__ import test3")
print"time taken using comprehension: ", t3.timeit(number=1000), "ms"

t4=Timer("test4()", "from __main__ import test4")
print"time taken using concatination and xrange: ", t4.timeit(number=1000), "ms"

t5=Timer("test5()", "from __main__ import test5")
print"time taken using list range: ", t5.timeit(number=1000), "ms"

t6=Timer("test6()", "from __main__ import test6")
print"time taken using list xrange: ", t6.timeit(number=1000), "ms"