Merge pull request #1227 from PokestarFan/add-types-snake

(#1164) Add types to util/snake.py

praw/util/snake.py

@@ -1,16 +1,17 @@
 """Contains functions dealing with snake case conversions."""
 
 import re
+from typing import Any, Dict
 
 _re_camel_to_snake = re.compile(r"([a-z0-9](?=[A-Z])|[A-Z](?=[A-Z][a-z]))")
 
 
-def camel_to_snake(name):
+def camel_to_snake(name: str) -> str:
     """Convert `name` from camelCase to snake_case."""
     return _re_camel_to_snake.sub(r"\1_", name).lower()
 
 
-def snake_case_keys(dictionary):
+def snake_case_keys(dictionary: Dict[str, Any]) -> Dict[str, Any]:
     """Return a new dictionary with keys converted to snake_case.
 
     :param dictionary: The dict to be corrected.