我收到此代码错误：
http://www.your-domain.com/index.html
当我与from pathos.multiprocessing import ProcessingPool
def diePlz(im):
print('Whoopdepoop!')
def caller():
im = 1
pool = ProcessingPool()
pool.map(diePlz,[im,im,im,im])
if __name__=='__main__':
caller()
：（cProfiler）一起运行时
python3 -m cProfile testProfiler.py但是当我在没有multiprocess.pool.RemoteTraceback:
"""
Traceback (most recent call last):
File "/home/rohit/.local/lib/python3.6/site-packages/multiprocess/pool.py", line 119, in worker
result = (True, func(*args, **kwds))
File "/home/rohit/.local/lib/python3.6/site-packages/multiprocess/pool.py", line 44, in mapstar
return list(map(*args))
File "/home/rohit/.local/lib/python3.6/site-packages/pathos/helpers/mp_helper.py", line 15, in <lambda>
func = lambda args: f(*args)
File "testProfiler.py", line 3, in diePlz
print('Whoopdepoop!')
NameError: name 'print' is not defined
"""
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/usr/lib/python3.6/runpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)
File "/usr/lib/python3.6/runpy.py", line 85, in _run_code
exec(code, run_globals)
File "/usr/lib/python3.6/cProfile.py", line 160, in <module>
main()
File "/usr/lib/python3.6/cProfile.py", line 153, in main
runctx(code, globs, None, options.outfile, options.sort)
File "/usr/lib/python3.6/cProfile.py", line 20, in runctx
filename, sort)
File "/usr/lib/python3.6/profile.py", line 64, in runctx
prof.runctx(statement, globals, locals)
File "/usr/lib/python3.6/cProfile.py", line 100, in runctx
exec(cmd, globals, locals)
File "testProfiler.py", line 11, in <module>
caller()
File "testProfiler.py", line 8, in caller
pool.map(diePlz,[im,im,im,im])
File "/home/rohit/.local/lib/python3.6/site-packages/pathos/multiprocessing.py", line 137, in map
return _pool.map(star(f), zip(*args)) # chunksize
File "/home/rohit/.local/lib/python3.6/site-packages/multiprocess/pool.py", line 266, in map
return self._map_async(func, iterable, mapstar, chunksize).get()
File "/home/rohit/.local/lib/python3.6/site-packages/multiprocess/pool.py", line 644, in get
raise self._value
NameError: name 'print' is not defined
的情况下运行它时：
cProfiler我提供的代码是解决该问题的最小示例。我想调试一个更大的代码，但不能这样做，因为$ python3 testProfiler.py
Whoopdepoop!
Whoopdepoop!
Whoopdepoop!
Whoopdepoop!
一直在引发奇怪的错误。
在这种情况下，重点是
cProfiler
，这意味着NameError: name 'print' is not defined
无法识别python3本身。在我的代码中，它无法识别print。
答案 0 :(得分：2)
所以，我意识到这是在原始帖子之后很长一段时间，但我遇到了完全相同的问题。
在我的例子中，我得到了与原始帖子完全相同的错误 - python 内置函数，例如 print() 或 len() 导致了这样的错误：
NameError: name 'len' is not defined
我目前正在运行 multiprocess 版本 0.70.11.1 和 dill 版本 0.3.3（使基于进程的并行工作的悲观组件）。
根据我在问题评论中的发现：https://github.com/uqfoundation/pathos/issues/129#issuecomment-536081859 软件包作者之一建议尝试：
import dill
dill.settings['recurse'] = True
至少在我的情况下，以上修复了错误！