Add nice docstrings to namedtuples.
diff --git a/Doc/library/collections.rst b/Doc/library/collections.rst
index fee59cf..176975b 100644
--- a/Doc/library/collections.rst
+++ b/Doc/library/collections.rst
@@ -653,6 +653,7 @@
_fields = ('x', 'y')
<BLANKLINE>
def __new__(_cls, x, y):
+ 'Create a new instance of Point(x, y)'
return _tuple.__new__(_cls, (x, y))
<BLANKLINE>
@classmethod
@@ -664,6 +665,7 @@
return result
<BLANKLINE>
def __repr__(self):
+ 'Return a nicely formatted representation string'
return 'Point(x=%r, y=%r)' % self
<BLANKLINE>
def _asdict(self):
@@ -678,10 +680,11 @@
return result
<BLANKLINE>
def __getnewargs__(self):
+ 'Return self as a plain tuple. Used by copy and pickle.'
return tuple(self)
<BLANKLINE>
- x = _property(_itemgetter(0))
- y = _property(_itemgetter(1))
+ x = _property(_itemgetter(0), doc='Alias for field number 0')
+ y = _property(_itemgetter(1), doc='Alias for field number 1')
>>> p = Point(11, y=22) # instantiate with positional or keyword arguments
>>> p[0] + p[1] # indexable like the plain tuple (11, 22)
diff --git a/Lib/collections.py b/Lib/collections.py
index 3e01054..6ec062f 100644
--- a/Lib/collections.py
+++ b/Lib/collections.py
@@ -233,6 +233,7 @@
__slots__ = () \n
_fields = %(field_names)r \n
def __new__(_cls, %(argtxt)s):
+ 'Create new instance of %(typename)s(%(argtxt)s)'
return _tuple.__new__(_cls, (%(argtxt)s)) \n
@classmethod
def _make(cls, iterable, new=tuple.__new__, len=len):
@@ -242,6 +243,7 @@
raise TypeError('Expected %(numfields)d arguments, got %%d' %% len(result))
return result \n
def __repr__(self):
+ 'Return a nicely formatted representation string'
return '%(typename)s(%(reprtxt)s)' %% self \n
def _asdict(self):
'Return a new OrderedDict which maps field names to their values'
@@ -253,9 +255,10 @@
raise ValueError('Got unexpected field names: %%r' %% kwds.keys())
return result \n
def __getnewargs__(self):
+ 'Return self as a plain tuple. Used by copy and pickle.'
return tuple(self) \n\n''' % locals()
for i, name in enumerate(field_names):
- template += ' %s = _property(_itemgetter(%d))\n' % (name, i)
+ template += " %s = _property(_itemgetter(%d), doc='Alias for field number %d')\n" % (name, i, i)
if verbose:
print(template)