mac os，python2.7 我使用多处理，但它失败了：
In [1]: from multiprocessing import Pool
In [2]: pool = Pool(30)
OSError Traceback (most recent call last)
/Users/mac/Documents/python-f/ga_users_v4_multipro.py in <module>()
141
142 if __name__ == '__main__':
--> 143 a,t=main()
144
/Users/mac/Documents/python-f/ga_users_v4_multipro.py in main()
111 date_range.append(t.strftime('%Y-%m-%d'))
112
--> 113 pool = Pool(30)
114 rrr=pool.map(get_report, date_range)
115 pool.close()
/Users/mac/.edm/envs/edm/lib/python2.7/multiprocessing/__init__.pyc in Pool(processes, initializer, initargs, maxtasksperchild)
230 '''
231 from multiprocessing.pool import Pool
--> 232 return Pool(processes, initializer, initargs, maxtasksperchild)
233
234 def RawValue(typecode_or_type, *args):
/Users/mac/.edm/envs/edm/lib/python2.7/multiprocessing/pool.pyc in __init__(self, processes, initializer, initargs, maxtasksperchild)
157 self._processes = processes
158 self._pool = []
--> 159 self._repopulate_pool()
160
161 self._worker_handler = threading.Thread(
/Users/mac/.edm/envs/edm/lib/python2.7/multiprocessing/pool.pyc in _repopulate_pool(self)
221 w.name = w.name.replace('Process', 'PoolWorker')
222 w.daemon = True
--> 223 w.start()
224 debug('added worker')
225
/Users/mac/.edm/envs/edm/lib/python2.7/multiprocessing/process.pyc in start(self)
128 else:
129 from .forking import Popen
--> 130 self._popen = Popen(self)
131 _current_process._children.add(self)
132
/Users/mac/.edm/envs/edm/lib/python2.7/multiprocessing/forking.pyc in __init__(self, process_obj)
119 self.returncode = None
120
--> 121 self.pid = os.fork()
122 if self.pid == 0:
123 if 'random' in sys.modules:
OSError: [Errno 35] Resource temporarily unavailable
我使用谷歌搜索，但许多人说这是python中的一个已知问题。解决了吗？ 我有什么办法可以解决它吗？