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# ``twisted`.`internet`.`inotify``

module documentation
(source)

This module provides support for Twisted to linux inotify API.

In order to use this support, simply do the following (and start a reactor at some point):

        from twisted.internet import inotify
        from twisted.python import filepath

        def notify(ignored, filepath, mask):
            """
            For historical reasons, an opaque handle is passed as first
            parameter. This object should never be used.

            @param filepath: FilePath on which the event happened.
            @param mask: inotify event as hexadecimal masks
            """
            print("event %s on %s" % (
                ', '.join(inotify.humanReadableMask(mask)), filepath))

        notifier = inotify.INotify()
        notifier.startReading()
        notifier.watch(filepath.FilePath("/some/directory"), callbacks=[notify])
        notifier.watch(filepath.FilePath(b"/some/directory2"), callbacks=[notify])

Note that in the above example, a `FilePath` which is a `bytes` path name or `str` path name may be used. However, no matter what type of `FilePath` is passed to this module, internally the `FilePath` is converted to `bytes` according to `sys.getfilesystemencoding`. For any `FilePath` returned by this module, the caller is responsible for converting from a `bytes` path name to a `str` path name.

Present Since
10.1

Class | `INotify` | The INotify file descriptor, it basically does everything related to INotify, from reading to notifying watch points.
Function | `humanReadableMask` | Auxiliary function that converts a hexadecimal mask into a series of human readable flags.
Constant | `IN_ACCESS` | Undocumented
Constant | `IN_ATTRIB` | Undocumented
Constant | `IN_CHANGED` | Undocumented
Constant | `IN_CLOSE` | Undocumented
Constant | `IN_CLOSE_NOWRITE` | Undocumented
Constant | `IN_CLOSE_WRITE` | Undocumented
Constant | `IN_CREATE` | Undocumented
Constant | `IN_DELETE` | Undocumented
Constant | `IN_DELETE_SELF` | Undocumented
Constant | `IN_DONT_FOLLOW` | Undocumented
Constant | `IN_IGNORED` | Undocumented
Constant | `IN_ISDIR` | Undocumented
Constant | `IN_MASK_ADD` | Undocumented
Constant | `IN_MODIFY` | Undocumented
Constant | `IN_MOVE_SELF` | Undocumented
Constant | `IN_MOVED` | Undocumented
Constant | `IN_MOVED_FROM` | Undocumented
Constant | `IN_MOVED_TO` | Undocumented
Constant | `IN_ONESHOT` | Undocumented
Constant | `IN_ONLYDIR` | Undocumented
Constant | `IN_OPEN` | Undocumented
Constant | `IN_Q_OVERFLOW` | Undocumented
Constant | `IN_UNMOUNT` | Undocumented
Constant | `IN_WATCH_MASK` | Undocumented
Class | `_Watch` | Watch object that represents a Watch point in the filesystem. The user should let INotify to create these objects
Constant | `_FLAG_TO_HUMAN` | Undocumented

def humanReadableMask(mask): (source)

Auxiliary function that converts a hexadecimal mask into a series of human readable flags.

IN_ACCESS: `int` = (source)

Undocumented

Value

    1

IN_ATTRIB: `int` = (source)

Undocumented

Value

    4

IN_CHANGED = (source)

Undocumented

Value

    IN_MODIFY|IN_ATTRIB

IN_CLOSE = (source)

Undocumented

Value

    IN_CLOSE_WRITE|IN_CLOSE_NOWRITE

IN_CLOSE_NOWRITE: `int` = (source)

Undocumented

Value

    16

IN_CLOSE_WRITE: `int` = (source)

Undocumented

Value

    8

IN_CREATE: `int` = (source)

Undocumented

Value

    256

IN_DELETE: `int` = (source)

Undocumented

Value

    512

IN_DELETE_SELF: `int` = (source)

Undocumented

Value

    1024

IN_DONT_FOLLOW: `int` = (source)

Undocumented

Value

    33554432

IN_IGNORED: `int` = (source)

Undocumented

Value

    32768

IN_ISDIR: `int` = (source)

Undocumented

Value

    1073741824

IN_MASK_ADD: `int` = (source)

Undocumented

Value

    536870912

IN_MODIFY: `int` = (source)

Undocumented

Value

    2

IN_MOVE_SELF: `int` = (source)

Undocumented

Value

    2048

IN_MOVED = (source)

Undocumented

Value

    IN_MOVED_FROM|IN_MOVED_TO

IN_MOVED_FROM: `int` = (source)

Undocumented

Value

    64

IN_MOVED_TO: `int` = (source)

Undocumented

Value

    128

IN_ONESHOT: `int` = (source)

Undocumented

Value

    2147483648

IN_ONLYDIR: `int` = (source)

Undocumented

Value

    16777216

IN_OPEN: `int` = (source)

Undocumented

Value

    32

IN_Q_OVERFLOW: `int` = (source)

Undocumented

Value

    16384

IN_UNMOUNT: `int` = (source)

Undocumented

Value

    8192

IN_WATCH_MASK = (source)

Undocumented

Value

    (((((((IN_MODIFY|IN_ATTRIB)|IN_CREATE)|IN_DELETE)|IN_DELETE_SELF)|IN_MOVE_SELF)|IN_UNMOUNT)|IN_MOVED_FROM)|IN_MOVED_TO

_FLAG_TO_HUMAN = (source)

Undocumented

Value

    [(IN_ACCESS, 'access'),
     (IN_MODIFY, 'modify'),
     (IN_ATTRIB, 'attrib'),
     (IN_CLOSE_WRITE, 'close_write'),
     (IN_CLOSE_NOWRITE, 'close_nowrite'),
     (IN_OPEN, 'open'),
     (IN_MOVED_FROM, 'moved_from'),
    ...