47 lines
1.5 KiB
ReStructuredText
47 lines
1.5 KiB
ReStructuredText
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:mod:`_io` -- input/output streams
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==================================
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.. module:: _io
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:synopsis: input/output streams
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This module contains additional types of stream (file-like) objects
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and helper functions.
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Functions
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---------
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.. function:: open(name, mode='r', **kwargs)
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Open a file. Builtin ``open()`` function is alised to this function.
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All ports (which provide access to file system) are required to support
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`mode` parameter, but support for other arguments vary by port.
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Classes
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-------
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.. class:: FileIO(...)
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This is type of a file open in binary mode, e.g. using ``open(name, "rb")``.
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You should not instantiate this class directly.
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.. class:: TextIOWrapper(...)
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This is type of a file open in text mode, e.g. using ``open(name, "rt")``.
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You should not instantiate this class directly.
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.. class:: StringIO([string])
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.. class:: BytesIO([string])
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In-memory file-like objects for input/output. `StringIO` is used for
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text-mode I/O (similar to a normal file opened with "t" modifier).
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`BytesIO` is used for binary-mode I/O (similar to a normal file
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opened with "b" modifier). Initial contents of file-like objects
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can be specified with `string` parameter (should be normal string
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for `StringIO` or bytes object for `BytesIO`). All the usual file
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methods like ``read()``, ``write()``, ``close()`` are available on
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these objects, and additionally, following method:
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.. method:: getvalue()
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Get the current contents of the underlying buffer which holds data.
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