使用pickle.load（）的EOFError

Question

I have the following code:

pos = [
    [('the', 'DT'), ('rabbit', 'NN'), ... ],
    [('he', 'PRP'), ('jokes', 'VBZ'), ... ],
    ...
]
with open(filename, 'w') as f:
    pickle.dump(pos, f)

Then I want to load the content:

with open(filename, 'r') as f:
    pos = [pickle.load(f) for i in range(the_length)]

But then I get this exception:

...

  File "C:\Anaconda\lib\pickle.py", line 1378, in load
    return Unpickler(file).load()

  File "C:\Anaconda\lib\pickle.py", line 858, in load
    dispatch[key](self)

  File "C:\Anaconda\lib\pickle.py", line 880, in load_eof
    raise EOFError

EOFError

Actually, the first list in pos is correctly loaded ( [('the', 'DT'), ('rabbit', 'NN'), ... ] ) but the exception occurs just after. If I open the file, there is indeed something wrong: all the sentences are stored but the file ends with a long list like this:

aa(lp269
a(lp270
a(lp271
a(lp272
a(lp273
a(lp274
a(lp275
...
a(lp3531
a.

(I tried to open the file with rb and wb instead of r and w but it doesn't solve anything)

Answer 1

If you only have one dump call, you should only have one load call.

with open(filename, 'r') as f:
    pos = pickle.load(f)