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Diffstat (limited to 'Doc/library/mmap.rst')
| -rw-r--r-- | Doc/library/mmap.rst | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/Doc/library/mmap.rst b/Doc/library/mmap.rst index 5001d4f55e..128bc90259 100644 --- a/Doc/library/mmap.rst +++ b/Doc/library/mmap.rst @@ -111,6 +111,18 @@ To map anonymous memory, -1 should be passed as the fileno along with the length map.close() + :class:`mmap` can also be used as a context manager in a :keyword:`with` + statement.:: + + import mmap + + with mmap.mmap(-1, 13) as map: + map.write("Hello world!") + + .. versionadded:: 3.2 + Context manager support. + + The next example demonstrates how to create an anonymous map and exchange data between the parent and child processes:: @@ -131,13 +143,19 @@ To map anonymous memory, -1 should be passed as the fileno along with the length Memory-mapped file objects support the following methods: - .. method:: close() Close the file. Subsequent calls to other methods of the object will result in an exception being raised. + .. attribute:: closed + + True if the file is closed. + + .. versionadded:: 3.2 + + .. method:: find(sub[, start[, end]]) Returns the lowest index in the object where the subsequence *sub* is |