Question

我在尝试使用PP时遇到了多个问题。我正在运行python2.6和pp 1.6.0 rc3。使用以下测试代码：

import pp
nodes=('mosura02','mosura03','mosura04','mosura05','mosura06',
       'mosura09','mosura10','mosura11','mosura12')

def pptester():
        js=pp.Server(ppservers=nodes)
        tmp=[]
        for i in range(200):
                tmp.append(js.submit(ppworktest,(),(),('os',)))
        return tmp

def ppworktest():
        return os.system("uname -a")

给我以下结果：

In [10]: Exception in thread run_local:
Traceback (most recent call last):
  File "/usr/lib64/python2.6/threading.py", line 525, in __bootstrap_inner
    self.run()
  File "/usr/lib64/python2.6/threading.py", line 477, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/home/wkerzend/python_coala/lib/python2.6/site-packages/pp.py", line 751, in _run_local
    job.finalize(sresult)
UnboundLocalError: local variable 'sresult' referenced before assignment

Exception in thread run_local:
Traceback (most recent call last):
  File "/usr/lib64/python2.6/threading.py", line 525, in __bootstrap_inner
    self.run()
  File "/usr/lib64/python2.6/threading.py", line 477, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/home/wkerzend/python_coala/lib/python2.6/site-packages/pp.py", line 751, in _run_local
    job.finalize(sresult)
UnboundLocalError: local variable 'sresult' referenced before assignment

Exception in thread run_local:
Traceback (most recent call last):
  File "/usr/lib64/python2.6/threading.py", line 525, in __bootstrap_inner
    self.run()
  File "/usr/lib64/python2.6/threading.py", line 477, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/home/wkerzend/python_coala/lib/python2.6/site-packages/pp.py", line 751, in _run_local
    job.finalize(sresult)
UnboundLocalError: local variable 'sresult' referenced before assignment

Exception in thread run_local:
Traceback (most recent call last):
  File "/usr/lib64/python2.6/threading.py", line 525, in __bootstrap_inner
    self.run()
  File "/usr/lib64/python2.6/threading.py", line 477, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/home/wkerzend/python_coala/lib/python2.6/site-packages/pp.py", line 751, in _run_local
    job.finalize(sresult)
UnboundLocalError: local variable 'sresult' referenced before assignment

非常感谢任何帮助。

Answer 1

我无法读取您的代码，因为它的格式不正确，但我可以告诉您确切的问题：您正在尝试从函数内部修改名为“sresult”的全局变量，但您没有添加此行到你的功能的开头：

global sresult

如果你没有声明变量global，如果你尝试在函数中分配它，Python会认为它是函数的本地函数，因此当你尝试修改或访问它时，Python会抱怨你还没有“绑定局部变量”（即，为其赋值或赋值）。

Answer 2

这是pp库中的一个错误。修复它，或等待它修复。

在赋值之前引用的局部变量'sresult'

2 个答案: