updated from Atlas

attic/functions/accgen.py

@@ -0,0 +1,36 @@
+"""
+Accumulator generator examples
+
+http://www.paulgraham.com/accgen.html
+
+    >>> f3 = foo(3)
+    >>> f3(2)
+    5
+    >>> f3(2)
+    7
+    >>> f3(2)
+    9
+
+
+"""
+
+class foo0:
+    def __init__(self, n):
+        self.n = n
+    def __call__(self, i):
+        self.n += i
+        return self.n
+
+def foo0(n):
+    def bar(i):
+        bar.s += i
+        return bar.s
+    bar.s = n
+    return bar
+
+def foo(n):
+    def bar(i):
+        nonlocal n
+        n += i
+        return n
+    return bar

attic/functions/attrgetter_demo.py

@@ -0,0 +1,25 @@
+
+metro_data = [
+    ('Tokyo', 'JP', 36.933, (35.689722, 139.691667)),
+    ('Delhi NCR', 'IN', 21.935, (28.613889, 77.208889)),
+    ('Mexico City', 'MX', 20.142, (19.433333, -99.133333)),
+    ('New York-Newark', 'US', 20.104, (40.808611, -74.020386)),
+    ('Sao Paulo', 'BR', 19.649, (-23.547778, -46.635833)),
+]
+
+from collections import namedtuple
+
+LatLong = namedtuple('LatLong', 'lat long')
+Metropolis = namedtuple('Metropolis', 'name cc pop coord')
+
+metro_areas = [Metropolis(name, cc, pop, LatLong(lat, long_))
+    for name, cc, pop, (lat, long_) in metro_data]
+
+metro_areas[0]
+metro_areas[0].coord.lat
+
+from operator import attrgetter
+name_lat = attrgetter('name', 'coord.lat')
+
+for city in sorted(metro_areas, key=attrgetter('coord.lat')):
+    print(name_lat(city))

attic/functions/attrgetter_demo.rst

@@ -0,0 +1,31 @@
+>>> metro_data = [
+...     ('Tokyo', 'JP', 36.933, (35.689722, 139.691667)),
+...     ('Delhi NCR', 'IN', 21.935, (28.613889, 77.208889)),
+...     ('Mexico City', 'MX', 20.142, (19.433333, -99.133333)),
+...     ('New York-Newark', 'US', 20.104, (40.808611, -74.020386)),
+...     ('Sao Paulo', 'BR', 19.649, (-23.547778, -46.635833)),
+... ]
+# BEGIN ATTRGETTER_DEMO
+
+>>> from collections import namedtuple
+>>> LatLong = namedtuple('LatLong', 'lat long')  # <1>
+>>> Metropolis = namedtuple('Metropolis', 'name cc pop coord')  # <2>
+>>> metro_areas = [Metropolis(name, cc, pop, LatLong(lat, long_))  # <3>
+...     for name, cc, pop, (lat, long_) in metro_data]
+>>> metro_areas[0]
+Metropolis(name='Tokyo', cc='JP', pop=36.933, coord=LatLong(lat=35.689722, long=139.691667))
+>>> metro_areas[0].coord.lat  # <4>
+35.689722
+>>> from operator import attrgetter  
+>>> name_lat = attrgetter('name', 'coord.lat')  # <5>
+>>>
+>>> for city in sorted(metro_areas, key=attrgetter('coord.lat')):  # <6>
+...     print(name_lat(city))  # <7>
+...
+('Sao Paulo', -23.547778)
+('Mexico City', 19.433333)
+('Delhi NCR', 28.613889)
+('Tokyo', 35.689722)
+('New York-Newark', 40.808611)
+
+# END ATTRGETTER_DEMO

attic/functions/hello.py

@@ -0,0 +1,5 @@
+import bobo
+
+@bobo.query('/')
+def hello(person):
+    return 'Hello %s!' % person

attic/functions/strkeydict2.py

@@ -0,0 +1,76 @@
+"""StrKeyDict always converts non-string keys to `str`
+
+Tests for item retrieval using `d[key]` notation::
+
+    >>> d = StrKeyDict([('2', 'two'), ('4', 'four')])
+    >>> d['2']
+    'two'
+    >>> d[4]
+    'four'
+    >>> d[1]
+    Traceback (most recent call last):
+      ...
+    KeyError: '1'
+
+Tests for the `in` operator::
+
+    >>> 2 in d
+    True
+    >>> 1 in d
+    False
+
+Test for item assignment using non-string key::
+
+    >>> d[0] = 'zero'
+    >>> d['0']
+    'zero'
+
+Tests for update using a `dict` or a sequence of pairs::
+
+    >>> d.update({6:'six', '8':'eight'})
+    >>> sorted(d.keys())
+    ['0', '2', '4', '6', '8']
+    >>> d.update([(10, 'ten'), ('12', 'twelve')])
+    >>> sorted(d.keys())
+    ['0', '10', '12', '2', '4', '6', '8']
+    >>> d.update([1, 3, 5])
+    Traceback (most recent call last):
+      ...
+    TypeError: 'int' object is not iterable
+
+"""
+# BEGIN STRKEYDICT
+
+import collections
+import collections.abc
+
+
+class StrKeyDict(collections.UserDict):  # <1>
+
+    def __init__(self, args, normalize=str, **kwargs):
+        super().__init__(self, *args, **kwargs)
+        self.normalize = normalize
+
+    def __missing__(self, key):  # <2>
+        if self.normalize(key) == key:
+            raise KeyError(key)
+        return self[self.normalize(key)]
+
+    def __contains__(self, key):
+        return self.normalize(key) in self.data  # <3>
+
+    def __setitem__(self, key, item):
+        self.data[self.normalize(key)] = item   # <4>
+
+    def update(self, iterable=None, **kwds):
+        if iterable is not None:
+            if isinstance(iterable, collections.abc.Mapping):  # <5>
+                pairs = iterable.items()
+            else:
+                pairs = ((k, v) for k, v in iterable)  # <6>
+            for key, value in pairs:
+                self[key] = value  # <7>
+        if kwds:
+            self.update(kwds)  # <8>
+
+# END STRKEYDICT