Data commit

Task/Reflection-List-methods/Python/reflection-list-methods.py

@@ -0,0 +1,93 @@
+import inspect
+
+# Sample classes for inspection
+class Super(object):
+  def __init__(self, name):
+    self.name = name
+
+  def __str__(self):
+    return "Super(%s)" % (self.name,)
+
+  def doSup(self):
+    return 'did super stuff'
+
+  @classmethod
+  def cls(cls):
+    return 'cls method (in sup)'
+
+  @classmethod
+  def supCls(cls):
+    return 'Super method'
+
+  @staticmethod
+  def supStatic():
+    return 'static method'
+
+class Other(object):
+  def otherMethod(self):
+    return 'other method'
+
+class Sub(Other, Super):
+  def __init__(self, name, *args):
+    super(Sub, self).__init__(name);
+    self.rest = args;
+    self.methods = {}
+
+  def __dir__(self):
+    return list(set( \
+        sum([dir(base) for base in type(self).__bases__], []) \
+        + type(self).__dict__.keys() \
+        + self.__dict__.keys() \
+        + self.methods.keys() \
+      ))
+
+  def __getattr__(self, name):
+    if name in self.methods:
+      if callable(self.methods[name]) and self.methods[name].__code__.co_argcount > 0:
+        if self.methods[name].__code__.co_varnames[0] == 'self':
+          return self.methods[name].__get__(self, type(self))
+        if self.methods[name].__code__.co_varnames[0] == 'cls':
+          return self.methods[name].__get__(type(self), type)
+      return self.methods[name]
+    raise AttributeError("'%s' object has no attribute '%s'" % (type(self).__name__, name))
+
+  def __str__(self):
+    return "Sub(%s)" % self.name
+
+  def doSub():
+    return 'did sub stuff'
+
+  @classmethod
+  def cls(cls):
+    return 'cls method (in Sub)'
+
+  @classmethod
+  def subCls(cls):
+    return 'Sub method'
+
+  @staticmethod
+  def subStatic():
+    return 'Sub method'
+
+sup = Super('sup')
+sub = Sub('sub', 0, 'I', 'two')
+sub.methods['incr'] = lambda x: x+1
+sub.methods['strs'] = lambda self, x: str(self) * x
+
+# names
+[method for method in dir(sub) if callable(getattr(sub, method))]
+# instance methods
+[method for method in dir(sub) if callable(getattr(sub, method)) and hasattr(getattr(sub, method), '__self__') and getattr(sub, method).__self__ == sub]
+#['__dir__', '__getattr__', '__init__', '__str__', 'doSub', 'doSup', 'otherMethod', 'strs']
+# class methods
+[method for method in dir(sub) if callable(getattr(sub, method)) and hasattr(getattr(sub, method), '__self__') and getattr(sub, method).__self__ == type(sub)]
+#['__subclasshook__', 'cls', 'subCls', 'supCls']
+# static & free dynamic methods
+[method for method in dir(sub) if callable(getattr(sub, method)) and type(getattr(sub, method)) == type(lambda:nil)]
+#['incr', 'subStatic', 'supStatic']
+
+# names & values; doesn't include wrapped, C-native methods
+inspect.getmembers(sub, predicate=inspect.ismethod)
+# names using inspect
+map(lambda t: t[0], inspect.getmembers(sub, predicate=inspect.ismethod))
+#['__dir__', '__getattr__', '__init__', '__str__', 'cls', 'doSub', 'doSup', 'otherMethod', 'strs', 'subCls', 'supCls']