diff --git a/ansible_mitogen/transport_config.py b/ansible_mitogen/transport_config.py
index 92de32ec..21c16a99 100644
--- a/ansible_mitogen/transport_config.py
+++ b/ansible_mitogen/transport_config.py
@@ -367,7 +367,6 @@ class PlayContextSpec(Spec):
         # #511, #536: executor/module_common.py::_get_shebang() hard-wires
         # "/usr/bin/python" as the default interpreter path if no other
         # interpreter is specified.
-        # raise ValueError(parse_python_path(s))
         return parse_python_path(s or '/usr/bin/python')
 
     def private_key_file(self):
@@ -582,7 +581,6 @@ class MitogenViaSpec(Spec):
         # #511, #536: executor/module_common.py::_get_shebang() hard-wires
         # "/usr/bin/python" as the default interpreter path if no other
         # interpreter is specified.
-        # raise ValueError(parse_python_path(s))
         return parse_python_path(s or '/usr/bin/python')
 
     def private_key_file(self):
diff --git a/mitogen/parent.py b/mitogen/parent.py
index 6ca6369a..ce75ef64 100644
--- a/mitogen/parent.py
+++ b/mitogen/parent.py
@@ -1457,11 +1457,12 @@ class Connection(object):
 
     def get_python_argv(self):
         """
-        Return the command necessary to invoke Python,
-        by returning a 1-element list containing :attr:`python_path` + codecs
+        Return the initial argument vector elements necessary to invoke Python,
+        by returning a 1-element list containing :attr:`python_path` if it is a
+        string, or simply returning it if it is already a list.
 
         This allows emulation of existing tools where the Python invocation may
-        be set to e.g. `['/usr/bin/env', 'python']`
+        be set to e.g. `['/usr/bin/env', 'python']`.
         """
         if isinstance(self.options.python_path, list):
             return self.options.python_path