From 4f4c69eb262562a7ca36e087e907c2fb310fa31d Mon Sep 17 00:00:00 2001
From: dhood <dhood@users.noreply.github.com>
Date: Sun, 17 Jun 2018 19:46:04 -0700
Subject: [PATCH] Fix mypy error that __init__ must return None

---
 launch/launch/events/process/process_exited.py   | 2 +-
 launch/launch/events/process/process_stdout.py   | 2 +-
 launch/launch/events/process/shutdown_process.py | 2 +-
 launch/launch/substitutions/text_substitution.py | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/launch/launch/events/process/process_exited.py b/launch/launch/events/process/process_exited.py
index fe57bfc04..db7228180 100644
--- a/launch/launch/events/process/process_exited.py
+++ b/launch/launch/events/process/process_exited.py
@@ -27,7 +27,7 @@ def __init__(
         *,
         returncode: int,
         **kwargs
-    ):
+    ) -> None:
         """
         Constructor.
 
diff --git a/launch/launch/events/process/process_stdout.py b/launch/launch/events/process/process_stdout.py
index 44cd66c41..0263301a1 100644
--- a/launch/launch/events/process/process_stdout.py
+++ b/launch/launch/events/process/process_stdout.py
@@ -22,7 +22,7 @@ class ProcessStdout(ProcessIO):
 
     name = 'launch.events.process.ProcessStdout'
 
-    def __init__(self, *, text: bytes, **kwargs):
+    def __init__(self, *, text: bytes, **kwargs) -> None:
         """
         Constructor.
 
diff --git a/launch/launch/events/process/shutdown_process.py b/launch/launch/events/process/shutdown_process.py
index 59f68976e..ed0b23534 100644
--- a/launch/launch/events/process/shutdown_process.py
+++ b/launch/launch/events/process/shutdown_process.py
@@ -36,6 +36,6 @@ class ShutdownProcess(ProcessTargetedEvent):
 
     name = 'launch.events.process.ShutdownProcess'
 
-    def __init__(self, *, process_matcher: Callable[['ExecuteProcess'], bool]):
+    def __init__(self, *, process_matcher: Callable[['ExecuteProcess'], bool]) -> None:
         """Constructor."""
         super().__init__(process_matcher=process_matcher)
diff --git a/launch/launch/substitutions/text_substitution.py b/launch/launch/substitutions/text_substitution.py
index dbec2b29d..8f907d23d 100644
--- a/launch/launch/substitutions/text_substitution.py
+++ b/launch/launch/substitutions/text_substitution.py
@@ -23,7 +23,7 @@
 class TextSubstitution(Substitution):
     """Substitution that wraps a single string text."""
 
-    def __init__(self, *, text: Text):
+    def __init__(self, *, text: Text) -> None:
         """Constructor."""
         super().__init__()