AttributeError：'模块'对象没有任何属性（当使用cPickle时）

Question

我想使用cPickle在远程环境中加载函数。但我得到了 错误“模块”对象没有属性...“。凡我很坚持是命名空间具有 已经包含了属性，即使它无法加载 请帮助

import inspect 
import cPickle as pickle 
from run import run 


def get_source(func): 
sourcelines = inspect.getsourcelines(func)[0] 
sourcelines[0] = sourcelines[0].lstrip() 
return "".join(sourcelines) 

def fun(f): 
return f() 

def fun1(): 
return 10 

funcs = (fun, fun1) 

sources = [get_source(func) for func in funcs] 

funcs_serialized = pickle.dumps((fun.func_name,sources),0) 

args_serialized = pickle.dumps(fun1,0) 

#Creating the Environment where fun & fun1 doesnot exist 
del globals()['fun'] 
del globals()['fun1'] 

r = run() 

r.work(funcs_serialized,args_serialized) 

这里是run.py

import cPickle as pickle 

class run(): 
def __init__(self): 
    pass 

def work(self,funcs_serialized,args_serialized): 

    func, fsources = pickle.loads(funcs_serialized) 

    fobjs = [compile(fsource, '<string>', 'exec') for fsource in fsources] 

    #After eval fun and fun1 should be there in globals/locals 
    for fobj in fobjs: 
    try: 
    eval(fobj) 
    globals().update(locals()) 
    except: 
    pass 

    print "Fun1 in Globals: ",globals()['fun1'] 
    print "Fun1 in locals: ",locals()['fun1'] 
    arg = pickle.loads(args_serialized) 

的错误是

Fun1 in Globals: <function fun1 at 0xb7dae6f4> 
Fun1 in locals: <function fun1 at 0xb7dae6f4> 
Traceback (most recent call last): 
    File "fun.py", line 32, in <module> 
    r.work(funcs_serialized,args_serialized) 
    File "/home/guest/kathi/python/workspace/run.py", line 23, in work 
    arg = pickle.loads(args_serialized) 
AttributeError: 'module' object has no attribute 'fun1' 

Answer 1

我发现这个链接有用： http://stefaanlippens.net/python-pickling-and-dealing-with-attributeerror-module-object-has-no-attribute-thing.html

它提供了两种解决方案。更好的解决办法是增加装填模块（或__main__）的头：

from myclassmodule import MyClass 

但我认为一个更好的解决方案应该存在。

Answer 2

功能的模块名称被保存到泡菜中，当你在做loads它正在寻找fun1在__main__或徘徊无论它最初

Answer 3

从http://docs.python.org/library/pickle.html#what-can-be-pickled-and-unpickled：

Note that functions (built-in and user-defined) are pickled by “fully qualified” name reference, not by value. This means that only the function name is pickled, along with the name of module the function is defined in. Neither the function’s code, nor any of its function attributes are pickled. Thus the defining module must be importable in the unpickling environment, and the module must contain the named object, otherwise an exception will be raised.

您定义FUN1模块中删除提及FUN1，从而错误。

Answer 4

尝试添加

from your_first_module import fun,fun1 

到run.py