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  • pickle

    2018-04-05 15:34:22
    pickle
    pickle
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  • Pickle

    2018-02-26 17:23:25
    Pickle资料1、python pickle模块

    Pickle资料



    1、python pickle模块

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  • Pickle?

    2020-12-25 18:21:29
    <p>I downloaded the whole blockchain to generate a database, using the tool you mentioned, however that tool does not create pickle files, and simply renaming the files don't work, the pickle ...
  • Pickle listener

    2020-12-27 02:45:55
    <div><p>Is there support for listners for plain text and pickle on relay-ng? I currently have things that send in both to an ordinary Carbon relay daemon which listens on both 2003/2004. I can see ...
  • pickle support

    2020-11-28 01:10:18
    <div><p>Similar to issue #20 , how can ... By mimicking pickle sourcecode equivalent into aiofiles? Can such support be a feature of aiofiles?</p><p>该提问来源于开源项目:Tinche/aiofiles</p></div>
  • pickle error

    2020-11-30 13:23:24
    <div><p>i faced module not ... import Pickle as pkl ModuleNotFoundError: No module named 'Pickle' can you please help me</p><p>该提问来源于开源项目:paarthneekhara/text-to-image</p></div>
  • Pickle Error

    2020-12-26 09:49:57
    <div><p>Receiving the following error where any pickle file is loaded <strong>_pickle.UnpicklingError: invalid load key, '\x02'</strong> <p>Eg. Line 35 sections.py</p><p>该提问来源于开源项目&...
  • python pickle

    2020-10-25 23:40:23
  • pickle.dump和pickle.load

    万次阅读 2018-10-08 14:49:45
    python的pickle模块实现了基本的数据序列和反序列化。通过pickle模块的序列化操作我们能够将程序中运行的对象信息保存到文件中去,永久存储;通过pickle模块的反序列化操作,我们能够从文件中创建上一次程序保存的...

    python的pickle模块实现了基本的数据序列和反序列化。通过pickle模块的序列化操作我们能够将程序中运行的对象信息保存到文件中去,永久存储;通过pickle模块的反序列化操作,我们能够从文件中创建上一次程序保存的对象。

    基本接口:

    pickle.dump(obj, file, [,protocol])
    

    注解:将对象obj保存到文件file中去。
       protocol为序列化使用的协议版本,0:ASCII协议,所序列化的对象使用可打印的ASCII码表示;
       1:老式的二进制协议;2:2.3版本引入的新二进制协议,较以前的更高效。其中协议0和1兼容老版本的python。protocol默认值为0。
       file:对象保存到的类文件对象。file必须有write()接口, file可以是一个以’w’方式打开的文件或者一个StringIO对象或者其他任何实现write()接口的对象。如果protocol>=1,文件对象需要是二进制模式打开的。

    pickle.load(file)
    

    注解:从file中读取一个字符串,并将它重构为原来的python对象。
       file:类文件对象,有read()和readline()接口。

    举例说明

    #使用pickle模块将数据对象保存到文件
    
    import pickle
    
    data1 = {'a': [1, 2.0, 3, 4+6j],
             'b': ('string', u'Unicode string'),
             'c': None}
    
    selfref_list = [1, 2, 3]
    selfref_list.append(selfref_list)
    
    output = open('data.pkl', 'wb')
    
    # Pickle dictionary using protocol 0.
    pickle.dump(data1, output)
    
    # Pickle the list using the highest protocol available.
    pickle.dump(selfref_list, output, -1)
    
    output.close()
    
    #使用pickle模块从文件中重构python对象
    
    import pprint, pickle
    
    pkl_file = open('data.pkl', 'rb')
    
    data1 = pickle.load(pkl_file)
    pprint.pprint(data1)
    
    data2 = pickle.load(pkl_file)
    pprint.pprint(data2)
    
    pkl_file.close()
    
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