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55 | <H1><A NAME="SECTION0051400000000000000000"> | |
56 | 3.14 <tt class="module">pickle</tt> -- Python object serialization</A> | |
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58 | ||
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60 | <A NAME="module-pickle"></A> | |
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65 | <P> | |
66 | The <tt class="module">pickle</tt> module implements a fundamental, but powerful | |
67 | algorithm for serializing and de-serializing a Python object | |
68 | structure. ``Pickling'' is the process whereby a Python object | |
69 | hierarchy is converted into a byte stream, and ``unpickling'' is the | |
70 | inverse operation, whereby a byte stream is converted back into an | |
71 | object hierarchy. Pickling (and unpickling) is alternatively known as | |
72 | ``serialization'', ``marshalling,''<A NAME="tex2html14" | |
73 | HREF="#foot8963"><SUP>3.2</SUP></A> or ``flattening'', | |
74 | however, to avoid confusion, the terms used here are ``pickling'' and | |
75 | ``unpickling''. | |
76 | ||
77 | <P> | |
78 | This documentation describes both the <tt class="module">pickle</tt> module and the | |
79 | <tt class="module"><a href="module-cPickle.html">cPickle</a></tt> module. | |
80 | ||
81 | <P> | |
82 | <BR><HR><H4>Footnotes</H4> | |
83 | <DL> | |
84 | <DT><A NAME="foot8963">... ``marshalling,''</A><A | |
85 | href="module-pickle.html#tex2html14"><SUP>3.2</SUP></A></DT> | |
86 | <DD>Don't confuse this with | |
87 | the <tt class="module"><a href="module-marshal.html">marshal</a></tt> module | |
88 | ||
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95 | ||
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97 | <LI><A href="node63.html">3.14.1 Relationship to other Python modules</a> | |
98 | <LI><A href="node64.html">3.14.2 Data stream format</a> | |
99 | <LI><A href="node65.html">3.14.3 Usage</a> | |
100 | <LI><A href="node66.html">3.14.4 What can be pickled and unpickled?</a> | |
101 | <LI><A href="pickle-protocol.html">3.14.5 The pickle protocol</a> | |
102 | <UL> | |
103 | <LI><A href="pickle-inst.html">3.14.5.1 Pickling and unpickling normal class | |
104 | instances</a> | |
105 | <LI><A href="node69.html">3.14.5.2 Pickling and unpickling extension types</a> | |
106 | <LI><A href="node70.html">3.14.5.3 Pickling and unpickling external objects</a> | |
107 | </ul> | |
108 | <LI><A href="pickle-sub.html">3.14.6 Subclassing Unpicklers</a> | |
109 | <LI><A href="pickle-example.html">3.14.7 Example</a> | |
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148 | <span class="release-info">Release 2.4.2, documentation updated on 28 September 2005.</span> | |
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