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//lib64/python2.7/test/reperf.py

 import re
import time

def main():
    s = "\13hello\14 \13world\14 " * 1000
    p = re.compile(r"([\13\14])")
    timefunc(10, p.sub, "", s)
    timefunc(10, p.split, s)
    timefunc(10, p.findall, s)

def timefunc(n, func, *args, **kw):
    t0 = time.clock()
    try:
        for i in range(n):
            result = func(*args, **kw)
        return result
    finally:
        t1 = time.clock()
        if n > 1:
            print n, "times",
        print func.__name__, "%.3f" % (t1-t0), "CPU seconds"

main()