diff --git a/stoplight/rc.py b/stoplight/rc.py
index f5bf42a..5a51339 100644
--- a/stoplight/rc.py
+++ b/stoplight/rc.py
@@ -5,9 +5,9 @@
 
 
 def load():
-    '''
+    """
     Load configuration file as TOML.
-    '''
+    """
     global RC
     name = rc_filename()
     if name:
@@ -16,6 +16,9 @@ def load():
 
 
 def rc_filename() -> str | None:
+    """
+    Return either local or home .stoplightrc file or None if neither exist.
+    """
     name = '.stoplightrc'
     if not os.path.exists(name):
         name = f'{os.path.expanduser("~")}/{name}'
@@ -25,9 +28,9 @@ def rc_filename() -> str | None:
 
 
 def get(key: str) -> str | None:
-    '''
+    """
     Get value of key and return None if key does not exist.
-    '''
+    """
     if RC is None:
         return None
     return RC.get(key)