AttributeError：'模塊'對象沒有任何屬性（當使用cPickle時）

Question

我想使用cPickle在遠程環境中加載函數。但我得到了 錯誤「模塊」對象沒有屬性...「。凡我很堅持是命名空間具有 已經包含了屬性，即使它無法加載 請幫助

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) 

這裏是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) 

的錯誤是

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

我發現這個鏈接有用： http://stefaanlippens.net/python-pickling-and-dealing-with-attributeerror-module-object-has-no-attribute-thing.html

它提供了兩種解決方案。更好的解決辦法是增加裝填模塊（或__main__）的頭：

from myclassmodule import MyClass 

但我認爲一個更好的解決方案應該存在。

Answer 2

功能的模塊名稱被保存到泡菜中，當你在做loads它正在尋找fun1在__main__或徘徊無論它最初

Answer 3

從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.

您定義FUN1模塊中刪除提及FUN1，從而錯誤。

Answer 4

嘗試添加

from your_first_module import fun,fun1 

到run.py