Add compose, partialable and xpath to resources/python.

resources/python/compose.py

@@ -0,0 +1,30 @@
+import functools
+
+
+def compose2(f, g):
+    return lambda x: f(g(x))
+
+
+def compose(*functions):
+    return reduce(compose2, functions)
+
+
+def extract_args(function):
+    @functools.wraps(function)
+    def wrapped(args):
+        return function(*args)
+    return wrapped
+
+
+def extract_kwargs(function):
+    @functools.wraps(function)
+    def wrapped(kwargs):
+        return function(**kwargs)
+    return wrapped
+
+
+def extract_args_kwargs(function):
+    @functools.wraps(function)
+    def wrapped((args, kwargs)):
+        return function(*args, **kwargs)
+    return wrapped