backend: Rename all references to warrior to backend

[etc/taskwarrior.git] / docs / index.rst

diff --git a/docs/index.rst b/docs/index.rst
index dfddeb02a812e77bf945bed1199a1cb992f87c56..1dc90b7077e46133d932ac7b5cce2d9513ddd0aa 100644 (file)
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -10,7 +10,7 @@ Older versions of taskwarrior are untested and may not work.
 Requirements
 ------------
 
 Requirements
 ------------
 

-* taskwarrior_ v2.1.x or above.
+* taskwarrior_ v2.1.x or above, although newest minor release is recommended.

 
 Installation
 ------------
 
 Installation
 ------------


@@ -103,6 +103,30 @@ The following fields are deserialized into Python objects:
 Attributes should be set using the correct Python representation, which will be
 serialized into the correct format when the task is saved.
 
 Attributes should be set using the correct Python representation, which will be
 serialized into the correct format when the task is saved.
 

+Task properties
+---------------
+
+Tasklib defines several properties upon ``Task`` object, for convenience::
+
+    >>> t.save()
+    >>> t.saved
+    True
+    >>> t.pending
+    True
+    >>> t.active
+    False
+    >>> t.start()
+    >>> t.active
+    True
+    >>> t.done()
+    >>> t.completed
+    True
+    >>> t.pending
+    False
+    >>> t.delete()
+    >>> t.deleted
+    True
+

 Operations on Tasks
 -------------------
 
 Operations on Tasks
 -------------------
 


@@ -147,6 +171,18 @@ Switching back to the open python process::
    >>> task['tags']
    ['someday']
 
    >>> task['tags']
    ['someday']
 

+Tasks can also be started and stopped. Use ``start()`` and ``stop()``
+respectively::
+
+    >>> task.start()
+    >>> task['start']
+    datetime.datetime(2015, 7, 16, 18, 48, 28, tzinfo=<DstTzInfo 'Europe/Prague' CEST+2:00:00 DST>)
+    >>> task.stop()
+    >>> task['start']
+    >>> task.done()
+    >>> task['end']
+    datetime.datetime(2015, 7, 16, 18, 49, 2, tzinfo=<DstTzInfo 'Europe/Prague' CEST+2:00:00 DST>)
+

 
 Retrieving Tasks
 ----------------
 
 Retrieving Tasks
 ----------------


@@ -342,6 +378,32 @@ are set in the same timezone:
     >>> t['due'] == now.astimezone(pytz.utc)
     True
 
     >>> t['due'] == now.astimezone(pytz.utc)
     True
 

+*Note*: Following behaviour is available only for TaskWarrior >= 2.4.0.
+
+There is a third approach to setting up date time values, which leverages
+the 'task calc' command. You can simply set any datetime attribute to
+any string that contains an acceptable TaskWarrior-formatted time expression::
+
+    $ task calc now + 1d
+    2015-07-17T21:17:54
+
+This syntax can be leveraged in the python interpreter as follows::
+
+    >>> t['due'] = "now + 1d"
+    >>> t['due']
+    datetime.datetime(2015, 7, 17, 21, 19, 31, tzinfo=<DstTzInfo 'Europe/Berlin' CEST+2:00:00 DST>)
+
+It can be easily seen that the string with TaskWarrior-formatted time expression
+is automatically converted to native datetime in the local time zone.
+
+For the list of acceptable formats and keywords, please consult:
+
+* http://taskwarrior.org/docs/dates.html
+* http://taskwarrior.org/docs/named_dates.html
+
+However, as each such assigment involves call to 'task calc' for conversion,
+it might cause some performance issues when assigning strings to datetime
+attributes repeatedly, in a automated manner.

 
 Working with annotations
 ------------------------
 
 Working with annotations
 ------------------------


@@ -399,6 +461,26 @@ You can use ``config_override`` keyword argument to specify a dictionary of conf
 
     >>> tw.execute_command(['3', 'done'], config_override={'gc': 'off'}) # Will mark 3 as completed and it will retain its ID
 
 
     >>> tw.execute_command(['3', 'done'], config_override={'gc': 'off'}) # Will mark 3 as completed and it will retain its ID
 

+
+Additionally, you can use ``return_all=True`` flag, which returns
+``(stdout, sterr, return_code)`` triplet, and ``allow_failure=False``, which will
+prevent tasklib from raising an exception if the task binary returned non-zero
+return code::
+
+    >>> tw.execute_command(['invalidcommand'], allow_failure=False, return_all=True)
+    ([u''],
+     [u'Using alternate .taskrc file /home/tbabej/.taskrc',
+      u"[task next rc:/home/tbabej/.taskrc rc.recurrence.confirmation=no rc.json.array=off rc.confirmation=no rc.bulk=0 rc.dependency.confirmation=no description ~ 'invalidcommand']",
+      u'Configuration override rc.recurrence.confirmation:no',
+      u'Configuration override rc.json.array:off',
+      u'Configuration override rc.confirmation:no',
+      u'Configuration override rc.bulk:0',
+      u'Configuration override rc.dependency.confirmation:no',
+      u'No matches.',
+      u'There are local changes.  Sync required.'],
+     1)
+
+

 Setting custom configuration values
 -----------------------------------
 
 Setting custom configuration values
 -----------------------------------