Sessions

class libtmux.Session(server=None, **kwargs)

Bases: libtmux.common.TmuxMappingObject, libtmux.common.TmuxRelationalObject, libtmux.common.EnvironmentMixin

A tmux(1) session [1].

Holds Window objects.

Parameters:server (Server) –

References

[1]
tmux session. openbsd manpage for TMUX(1).

“When tmux is started it creates a new session with a single window and displays it on screen…”

“A session is a single collection of pseudo terminals under the management of tmux. Each session has one or more windows linked to it.”

https://man.openbsd.org/tmux.1#DESCRIPTION. Accessed April 1st, 2018.

child_id_attribute = u'window_id'

unique child ID key for TmuxRelationalObject

formatter_prefix = u'session_'

namespace used TmuxMappingObject

cmd(*args, **kwargs)

Return server.cmd().

Returns:
Return type:server.cmd

Notes

Changed in version 0.8: Renamed from .tmux to .cmd.

attach_session()

Return $ tmux attach-session aka alias: $ tmux attach.

kill_session()

$ tmux kill-session.

switch_client()

Switch client to this session.

Raises:exc.LibTmuxException
rename_session(new_name)

Rename session and return new Session object.

Parameters:new_name (str) – new session name
Returns:
Return type:Session
Raises:exc.BadSessionName
new_window(window_name=None, start_directory=None, attach=True, window_index=u'', window_shell=None)

Return Window from $ tmux new-window.

By default, this will make the window active. For the new window to be created and not set to current, pass in attach=False.

Parameters:
  • window_name (str, optional) –
  • start_directory (str, optional) – working directory in which the new window is created.
  • attach (bool, optional) – make new window the current window after creating it, default True.
  • window_index (str) – create the new window at the given index position. Default is empty string which will create the window in the next available position.
  • window_shell (str) –

    execute a command on starting the window. The window will close when the command exits.

    Note

    When this command exits the window will close. This feature is useful for long-running processes where the closing of the window upon completion is desired.

Returns:

Return type:

Window

kill_window(target_window=None)

Close a tmux window, and all panes inside it, $ tmux kill-window

Kill the current window or the window at target-window. removing it from any sessions to which it is linked.

Parameters:target_window (str, optional) – window to kill
_windows

Property / alias to return Session._list_windows().

list_windows()

Return a list of Window from the tmux(1) session.

Returns:
Return type:Window
windows

Property / alias to return Session.list_windows().

children

Alias windows for TmuxRelationalObject

attached_window

Return active Window object.

Returns:
Return type:Window
select_window(target_window)

Return Window selected via $ tmux select-window.

Parameters:window (str) – target_window also ‘last-window’ (-l), ‘next-window’ (-n), or ‘previous-window’ (-p)
Returns:
Return type:Window

Notes

attached_pane

Return active Pane object.

set_option(option, value, _global=False)

Set option $ tmux set-option <option> <value>.

Parameters:
  • option (str) – the window option. such as ‘default-shell’.
  • value (str, int, or bool) – True/False will turn in ‘on’ and ‘off’. You can also enter ‘on’ or ‘off’ directly.
  • _global (bool, optional) – check for option globally across all servers (-g)
Raises:

Notes

show_options(option=None, _global=False)

Return a dict of options for the window.

For familiarity with tmux, the option option param forwards to pick a single option, forwarding to Session.show_option().

Parameters:
  • option (str, optional) – name of option, e.g. ‘visual-silence’. Defaults to None, which returns all options.
  • _global (bool, optional) – Pass -g flag for global variable (server-wide)
Returns:

Return type:

dict

Notes

Uses _global for keyword name instead of global to avoid colliding with reserved keyword.

show_option(option, _global=False)

Return a list of options for the window.

Parameters:
  • option (str) – option name
  • _global (bool, optional) – use global option scope, same as -g
Returns:

Return type:

str, int, or bool

Raises:

Notes

Uses _global for keyword name instead of global to avoid colliding with reserved keyword.

Test and return True/False for on/off string.

clear() → None. Remove all items from D.
find_where(attrs)

Return object on first match.

Changed in version 0.4: Renamed from .findWhere to .find_where.

get(k[, d]) → D[k] if k in D, else d. d defaults to None.
get_by_id(id)

Return object based on child_id_attribute.

Parameters:val (str) –
Returns:
Return type:object

Notes

Based on .get() from backbone.js.

items() → list of D's (key, value) pairs, as 2-tuples
iteritems() → an iterator over the (key, value) items of D
iterkeys() → an iterator over the keys of D
itervalues() → an iterator over the values of D
keys()

Return list of keys.

pop(k[, d]) → v, remove specified key and return the corresponding value.

If key is not found, d is returned if given, otherwise KeyError is raised.

popitem() → (k, v), remove and return some (key, value) pair

as a 2-tuple; but raise KeyError if D is empty.

remove_environment(name)

Remove environment variable $ tmux set-environment -r <name>.

Parameters:name (str) – the environment variable name. such as ‘PATH’.
set_environment(name, value)

Set environment $ tmux set-environment <name> <value>.

Parameters:
  • name (str) – the environment variable name. such as ‘PATH’.
  • option (str) – environment value.
setdefault(k[, d]) → D.get(k,d), also set D[k]=d if k not in D
show_environment(name=None)

Show environment $ tmux show-environment -t [session] <name>.

Return dict of environment variables for the session or the value of a specific variable if the name is specified.

Parameters:name (str) – the environment variable name. such as ‘PATH’.
Returns:environmental variables in dict, if no name, or str if name entered.
Return type:str or dict
unset_environment(name)

Unset environment variable $ tmux set-environment -u <name>.

Parameters:name (str) – the environment variable name. such as ‘PATH’.
update([E, ]**F) → None. Update D from mapping/iterable E and F.

If E present and has a .keys() method, does: for k in E: D[k] = E[k] If E present and lacks .keys() method, does: for (k, v) in E: D[k] = v In either case, this is followed by: for k, v in F.items(): D[k] = v

values() → list of D's values
where(attrs, first=False)

Return objects matching child objects properties.

Parameters:attrs (dict) – tmux properties to match values of
Returns:
Return type:list