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34 lines
1.7 KiB
TeX
34 lines
1.7 KiB
TeX
\section{\module{pickletools} --- Tools for pickle developers.}
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\declaremodule{standard}{pickletools}
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\modulesynopsis{Contains extensive comments about the pickle protocols and pickle-machine opcodes, as well as some useful functions.}
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\versionadded{2.3}
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This module contains various constants relating to the intimate
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details of the \refmodule{pickle} module, some lengthy comments about
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the implementation, and a few useful functions for analyzing pickled
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data. The contents of this module are useful for Python core
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developers who are working on the \module{pickle} and \module{cPickle}
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implementations; ordinary users of the \module{pickle} module probably
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won't find the \module{pickletools} module relevant.
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\begin{funcdesc}{dis}{pickle\optional{, out=None, memo=None, indentlevel=4}}
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Outputs a symbolic disassembly of the pickle to the file-like object
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\var{out}, defaulting to \code{sys.stdout}. \var{pickle} can be a
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string or a file-like object. \var{memo} can be a Python dictionary
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that will be used as the pickle's memo; it can be used to perform
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disassemblies across multiple pickles created by the same pickler.
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Successive levels, indicated by \code{MARK} opcodes in the stream, are
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indented by \var{indentlevel} spaces.
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\end{funcdesc}
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\begin{funcdesc}{genops}{pickle}
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Provides an iterator over all of the opcodes in a pickle, returning a
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sequence of \code{(\var{opcode}, \var{arg}, \var{pos})} triples.
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\var{opcode} is an instance of an \class{OpcodeInfo} class; \var{arg}
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is the decoded value, as a Python object, of the opcode's argument;
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\var{pos} is the position at which this opcode is located.
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\var{pickle} can be a string or a file-like object.
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\end{funcdesc}
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