Added call_function_by_name

neat/common.py

@@ -185,3 +185,27 @@ def init_logging(log_directory, log_file, log_level):
     logger.addHandler(handler)
 
     return True
+
+
+@contract
+def call_function_by_name(name, args):
+    """ Call a function specified by a fully qualified name.
+
+    :param name: A fully qualified name of a function.
+     :type name: str
+
+    :param args: A list of positional arguments of the function.
+     :type args: list
+
+    :return: The return value of the function call.
+     :rtype: *
+    """
+    fragments = name.split('.')
+    module = '.'.join(fragments[:-1])
+    fromlist = fragments[-2]
+    function = fragments[-1]
+    m = __import__(module, fromlist=fromlist)
+    return getattr(m, function)(*args)
+
+
+

tests/test_common.py

@@ -130,3 +130,11 @@ class Common(TestCase):
             assert os.access(log_dir, os.W_OK)
 
         shutil.rmtree(log_dir, True)
+
+    def test_call_function_by_name(self):
+        with MockTransaction:
+            arg1 = 'a'
+            arg2 = 'b'
+            expect(common).func_to_call(arg1, arg2).and_return('res').once()
+            assert common.call_function_by_name('neat.common.func_to_call',
+                                                [arg1, arg2]) == 'res'