Define a protocol for paster implementations

sebastinas · sebastinas · commit deb64165ad23 · 2022-04-26T23:50:23.000+02:00
diff --git a/bpython/paste.py b/bpython/paste.py
@@ -22,7 +22,7 @@
 
 import errno
 import subprocess
-from typing import Tuple
+from typing import Optional, Tuple, Protocol
 from urllib.parse import urljoin, urlparse
 
 import requests
@@ -36,6 +36,11 @@ class PasteFailed(Exception):
     pass
 
 
+class Paster(Protocol):
+    def paste(self, s: str) -> Tuple[str, Optional[str]]:
+        ...
+
+
 class PastePinnwand:
     def __init__(self, url: str, expiry: str) -> None:
         self.url = url
