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happlebao 厉害,还有这个方法
>>> 
cProfile.run('binascii.hexlify(os.urandom(10**7)).decode()')
         6 function calls in 0.789 seconds
   Ordered by: standard name
   ncalls  tottime  percall  cumtime  percall filename:lineno(function)
        1    0.005    0.005    0.789    0.789 <string>:1(<module>)
        1    0.032    0.032    0.032    0.032 {built-in method binascii.hexlify}
        1    0.000    0.000    0.789    0.789 {built-in method builtins.exec}
        1    0.747    0.747    0.747    0.747 {built-in method posix.urandom}
        1    0.005    0.005    0.005    0.005 {method 'decode' of 'bytes' objects}
        1    0.000    0.000    0.000    0.000 {method 'disable' of '_lsprof.Profiler' objects}