我試圖使用並行python爲了做一些分佈式基準測試(本質上,協調和運行一些機器上的代碼從一箇中央服務器)。我的代碼工作得很好,直到我將功能移到一個單獨的包中。從那時起,我一直在收到ImportError: No module named some.module.pp_test
。獲取「ImportError:No module named」與包中的並行python和方法
我的問題實際上是雙重的:有沒有人遇到這個問題pp
,如果是的話,如何解決它?我嘗試使用dill
(import dill
),但沒有幫助。另外,是否有很好的替代parallelpython,不需要任何額外的基礎設施?
確切的錯誤我得到的是:
RUNNING TEST
Waiting for hosts to finish booting....A fatal error has occured during the function execution
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/ppworker.py", line 86, in run
__args = pickle.loads(__sargs)
ImportError: No module named some.module.pp_test
Caught exception in the run phase 'NoneType' object is not iterable
Traceback (most recent call last):
File "test.py", line 5, in <module>
p.ping_pong()
File "/home/ubuntu/workspace/pp-test/some/module/pp_test.py", line 5, in ping_pong
a_test.run()
File "/home/ubuntu/workspace/pp-test/some/module/pp_test.py", line 27, in run
pong, hostname = ping()
TypeError: 'NoneType' object is not iterable
代碼的結構是這樣的:
pp-test/
test.py
some/
__init__.py
module/
__init__.py
pp_test.py
的test.py
作爲實施:
from some.module.pp_test import MWE
p = MWE()
p.ping_pong()
雖然pp_test.py
是:
class MWE():
def ping_pong(self):
print "RUNNING TEST "
a_test = PPTester()
a_test.run()
import pp
import time
from sys import stdout, exit
class PPTester(object):
def run(self):
try:
ppservers = ('10.10.10.10',)
time.sleep(5)
job_server = pp.Server(0, ppservers=ppservers)
stdout.write("Waiting for hosts to finish booting...")
while len(job_server.get_active_nodes()) - 1 < len(ppservers):
stdout.write(".")
stdout.flush()
time.sleep(1)
ppmodules =()
pings = [(server, job_server.submit(self.run_pong, modules=ppmodules)) for server in ppservers]
for server, ping in pings:
pong, hostname = ping()
print "Host ", hostname, " is alive!"
print "All servers booted up, starting benchmarks..."
job_server.print_stats()
except Exception as e:
print "Caught exception in the run phase", e
raise
pass
def run_pong(self):
import subprocess
p = subprocess.Popen("hostname", stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
(output, err) = p.communicate()
p_status = p.wait()
return "pong ", output
我結束了使用dispy而不是平行python ... – 2014-10-09 13:21:00