如何使用cprofiler配置一个函数?
label = process_one(signature)
成为
import cProfile
label = cProfile.run(process_one(signature))
但它没有用:/
答案 0 :(得分:1)
根据文档(https://docs.python.org/2/library/profile.html),它应该是cProfile.run('process_one(signature)')
答案 1 :(得分:1)
您可以编写一些装饰器,这将有助于使用cProfile分析任何功能。这有助于我在需要时快速获取统计数据。
import cProfile
import pstats
import StringIO
import commands
def qprofile(func):
def profiled_func(*args, **kwargs):
if 'profile' in kwargs and kwargs['profile']:
kwargs.pop('profile')
profile = cProfile.Profile()
try:
profile.enable()
result = func(*args, **kwargs)
profile.disable()
return result
finally:
s = StringIO.StringIO()
ps = pstats.Stats(
profile, stream=s).strip_dirs(
).sort_stats('cumulative')
ps.print_stats(30)
print s.getvalue()
else:
result = func(*args, **kwargs)
return result
return profiled_func
@qprofile
def process_one(cmd):
output = commands.getoutput(cmd)
return output
# Function is profiled if profile=True in kwargs
print(process_one('uname -a', profile=True))
示例输出:
7 function calls in 0.013 seconds
Ordered by: cumulative time
ncalls tottime percall cumtime percall filename:lineno(function)
1 0.000 0.000 0.013 0.013 qprofiler.py:29(process_one)
1 0.000 0.000 0.013 0.013 commands.py:48(getoutput)
1 0.000 0.000 0.013 0.013 commands.py:56(getstatusoutput)
1 0.013 0.013 0.013 0.013 {method 'read' of 'file' objects}
1 0.000 0.000 0.000 0.000 {posix.popen}
1 0.000 0.000 0.000 0.000 {method 'close' of 'file' objects}
1 0.000 0.000 0.000 0.000 {method 'disable' of '_lsprof.Profiler' objects}
Linux chronin 4.4.0-42-generic #62-Ubuntu SMP Fri Oct 7 23:11:45 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
有关任何特定于电话的参考资料,请参阅官方文档, https://docs.python.org/2/library/profile.html