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      1 import re
      2 import time
      3 
      4 def main():
      5     s = "\13hello\14 \13world\14 " * 1000
      6     p = re.compile(r"([\13\14])")
      7     timefunc(10, p.sub, "", s)
      8     timefunc(10, p.split, s)
      9     timefunc(10, p.findall, s)
     10 
     11 def timefunc(n, func, *args, **kw):
     12     t0 = time.perf_counter()
     13     try:
     14         for i in range(n):
     15             result = func(*args, **kw)
     16         return result
     17     finally:
     18         t1 = time.perf_counter()
     19         if n > 1:
     20             print(n, "times", end=' ')
     21         print(func.__name__, "%.3f" % (t1-t0), "CPU seconds")
     22 
     23 main()
     24