Simplify key in dct and dct[key] to dct.get(key) #5933
Description
# bad
if "key" in dct and dct["key"]:
...
# good
if dct.get("key"):
...{{ message }}
key in dct and dct[key] to dct.get(key) #5933# bad
if "key" in dct and dct["key"]:
...
# good
if dct.get("key"):
...