Comparing strings methods for testing equality. http://stackoverflow.com/questions/18437798/find-vs-in-operation-in-string-python

20161227_stringOpsTest_EqualsVsIn.py

import timeit
from functools import partial

def myEquals(numItems):
    xList = [str(x) for x in xrange(numItems)]
    # print xList
    xCompList = []
    for n in xrange(len(xList)):
        for o in xrange(n):
            for p in xrange(len(xList)):
                # print n
                if xList[n][:o] == xList[p][:o]:
                    xCompList.append(True)
                else:
                    xCompList.append(False)

def mySubstring(numItems):
    xList = [str(x) for x in xrange(numItems)]
    # print xList
    xCompList = []
    for n in xrange(len(xList)):
        for o in xrange(n):
            for p in xrange(len(xList)):
                # print n
                if xList[n][:o] in xList[p]:
                    xCompList.append(True)
                else:
                    xCompList.append(False)

for x in [10, 50, 100, 200, 300]:
    print 'x is {} items'.format(x)
    myEqualsTime = timeit.timeit(partial(myEquals, x), number=1)
    mySubstringTime = timeit.timeit(partial(mySubstring, x), number=1)
    print 'myEqualsTime\t{}\nmySubstringTime {}\n'.format(myEqualsTime, mySubstringTime)

# x is 10 items
# myEqualsTime	 0.000173224523302
# mySubstringTime 0.000122451818196

# x is 50 items
# myEqualsTime	 0.0169367504359
# mySubstringTime 0.0126522167832

# x is 100 items
# myEqualsTime	 0.136645989234
# mySubstringTime 0.113794005322

# x is 200 items
# myEqualsTime	 0.961331251795
# mySubstringTime 0.784282135816

# x is 300 items
# myEqualsTime	 3.14249039692
# mySubstringTime 2.74275902293