comment with socket room

Change-Id: I262de69f84163440ae90fec01ca31ebdb3d2f09c

Author: windard

README.md

@@ -289,8 +289,12 @@ python的强大之处有很大的一方面在于它有各种各样非常强大
 
 ## [inspect](content/inspect.md)
 
+## [ply](content/ply.md)
+
 ## [marshmallow](content/marshmallow.md)
 
+## [abc](content/abc.md)
+
 ## [tools](content/tools.md)
 
 ## [Other_thing](content/other_thing.md)

code/abc_demo.py

@@ -0,0 +1,43 @@
+# coding=utf-8
+import abc
+
+
+class A(object):
+    __metaclass__ = abc.ABCMeta
+
+
+class B(object):
+
+    __metaclass__ = abc.ABCMeta
+
+    @abc.abstractmethod
+    def parse(self):
+        return B
+
+    @abc.abstractproperty
+    def name(self):
+        return "B"
+
+
+class BB(B):
+    def parse(self):
+        return super(BB, self).parse()
+
+    @property
+    def name(self):
+        return super(BB, self).name
+
+
+A.register(tuple)
+
+
+if __name__ == '__main__':
+    a = A()
+    # b = B()
+    # print(b.parse())
+    bb = BB()
+    print(bb.parse())
+    print(bb.name)
+
+    print issubclass(tuple, A)
+    print isinstance((), A)