Fixes #2666: None is the default value of file for httpx.NetRCAuth (#2667)

diff --git a/httpx/_auth.py b/httpx/_auth.py
index e67e0c15c4f94237a76e9b8998de2fd6a63fe103..1d7385d57334c46750d0618a407b49cd829856f4 100644 (file)
--- a/httpx/_auth.py
+++ b/httpx/_auth.py
@@ -147,7 +147,7 @@ class NetRCAuth(Auth):
     Use a 'netrc' file to lookup basic auth credentials based on the url host.
     """
 
-    def __init__(self, file: typing.Optional[str]):
+    def __init__(self, file: typing.Optional[str] = None):
         self._netrc_info = netrc.netrc(file)
 
     def auth_flow(self, request: Request) -> typing.Generator[Request, Response, None]: