pickle

问题 Update 6/8/17 Though 3 years passed, my PR is still pending as a temporary solution by enforcing the output order. Stream-Framework might reconsider its design on using content as key for notifications. GitHub Issue #153 references this. Question See following sample: import pickle x = {'order_number': 'X', 'deal_url': 'J'} pickle.dumps(x) pickle.dumps(pickle.loads(pickle.dumps(x))) pickle.dumps(pickle.loads(pickle.dumps(pickle.loads(pickle.dumps(x))))) Results: (dp0\nS'deal_url'\np1\nS'J'

问题 I have recently asked a question and received an answer that I must 'pickle' my code. As a beginner, I have no idea how to do that. 回答1: So, if I understood correctly by looking at the other two questions (1 and 2) you made related to this, your problem has two parts: One is generating a file with a list of user/passwords and the second is using that file to do a "login" system. The problem with writing to files is that you can regard a file as just text... It doesn't really retain the

问题 I would like to recognize and group duplicates values in a dictionary. To do this I build a pseudo-hash (better read signature ) of my data set as follow: from pickle import dumps taxonomy = {} binder = defaultdict(list) for key, value in ds.items(): signature = dumps(value) taxonomy[signature] = value binder[signature].append(key) For a concrete use-case see this question. Unfortunately I realized that if the following statement is True : >>> ds['key1'] == ds['key2'] True This one is not

问题 I have built a game that logs and saves the users score, using pickle, to a text file. When their lives are used up, they enter their name and their name and score are saved to a text file. Currently, if the "High Scores" section is selected on the main menu the high scores are simply printed in the python shell (or CMD if they're using that). I would like to create a separate window for just displaying the high scores. The window would simply display the scores and would refresh every time

问题 I am using Pickle in Python2.7. I am getting error while using cPickle.load() method. The code and error is shown below. Can someone guide me through this? Code: #! usr/bin/python import cPickle fo = open('result','rb') dict1 = cPickle.load(fo) Error: Traceback (most recent call last): File "C:\Python27\test.py", line 7, in <module> dicts = cPickle.load(fo) ImportError: No module named options 回答1: It seems like you can not do import options but when you or someone else did cpickle.dump(xxx,

问题 Do you know any solution to this: [Thu Jul 08 19:15:38 2010] [error] [client 79.162.31.162] mod_wsgi (pid=3072): Exception occurred processing WSGI script '/home/www/shop/django.wsgi'., referer: http://shop.domain.com/accounts/checkout/? [Thu Jul 08 19:15:38 2010] [error] [client 79.162.31.162] Traceback (most recent call last):, referer: http://shop.domain.com/accounts/checkout/? [Thu Jul 08 19:15:38 2010] [error] [client 79.162.31.162] File "/usr/lib/python2.5/site-packages/django/core

问题 I need to write a data structure stored as namedtuple to file and read it back as a namedtuple in python. Solutions here suggest using Json.load / loads or pickle which write the variable as json key-value pair in the form of strings. However, all my field accesses/dereferences are of the form struct.key (rather than struct["key"] which is the way to access json values), and it is unfeasible to correct this in the whole code. I want to store this to a file because the struct is huge and takes

问题 I'd like to replace MPI4PY's built-in Pickle -serialization with dill. According to the doc the class _p_Pickle should have 2 attributes called dumps and loads . However, python says there are no such attributes when i try the following from mpi4py Import MPI MPI._p_Pickle.dumps -> AttributeError: type object 'mpi4py.MPI._p_Pickle' has no attribute 'dumps' Where have dumps and loads gone? 回答1: In v2.0 you can change it via MPI.pickle.dumps = dill.dumps MPI.pickle.loads = dill.loads It seems

问题 On Windows, when I save 3D matplotlib surface plots using the pickle module and reload them, the plots lack any interactive functionality, such as being able to rotate the plots or zoom in on the plots. However, if I save and reload 2D pickled matplotlib plots, I am still able to interact with the plots, at least with the zoom tools. The following code recreates the successful 2D plot case. import matplotlib.pyplot as plt import numpy as np import pickle xs = np.linspace(0, 4*np.pi, 100) ys =

问题 I'm trying to manually set an object in the Django cache API but it fails (i think due to pickling?) The object is given to me by a third party, my code is: def index(request, template_name="mytemplate.htm"): user_list = cache.get("user_list_ds") if user_list is None: # this is the expensive bit I'm trying to cache # given to me by a third part user_list = graffiti.user_list("top", 100).responseObj().blocks() cache.set("user_list_ds", user_list, 10*60) # 10 minutes return render_to_response