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43 lines
1.4 KiB
43 lines
1.4 KiB
:mod:`ustruct` -- pack and unpack primitive data types
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======================================================
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.. module:: ustruct
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:synopsis: pack and unpack primitive data types
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See `Python struct <https://docs.python.org/3/library/struct.html>`_ for more
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information.
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Supported size/byte order prefixes: ``@``, ``<``, ``>``, ``!``.
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Supported format codes: ``b``, ``B``, ``h``, ``H``, ``i``, ``I``, ``l``,
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``L``, ``q``, ``Q``, ``s``, ``P``, ``f``, ``d`` (the latter 2 depending
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on the floating-point support).
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Functions
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---------
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.. function:: calcsize(fmt)
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Return the number of bytes needed to store the given `fmt`.
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.. function:: pack(fmt, v1, v2, ...)
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Pack the values `v1`, `v2`, ... according to the format string `fmt`.
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The return value is a bytes object encoding the values.
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.. function:: pack_into(fmt, buffer, offset, v1, v2, ...)
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Pack the values `v1`, `v2`, ... according to the format string `fmt`
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into a `buffer` starting at `offset`. `offset` may be negative to count
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from the end of `buffer`.
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.. function:: unpack(fmt, data)
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Unpack from the `data` according to the format string `fmt`.
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The return value is a tuple of the unpacked values.
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.. function:: unpack_from(fmt, data, offset=0)
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Unpack from the `data` starting at `offset` according to the format string
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`fmt`. `offset` may be negative to count from the end of `buffer`. The return
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value is a tuple of the unpacked values.
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