Fix urllib patch path (#1197)

python/langsmith/_internal/_patch.py

@@ -1,11 +1,19 @@
 # mypy: disable-error-code="import-untyped"
 import functools
 
-import six  # noqa
 from urllib3 import __version__ as urllib3version  # noqa
 from urllib3 import connection  # noqa
 
 
+def _ensure_str(s, encoding="utf-8", errors="strict") -> str:
+    if isinstance(s, str):
+        return s
+
+    if isinstance(s, bytes):
+        return s.decode(encoding, errors)
+    return str(s)
+
+
 # Copied from https://github.com/urllib3/urllib3/blob/1c994dfc8c5d5ecaee8ed3eb585d4785f5febf6e/src/urllib3/connection.py#L231
 def request(self, method, url, body=None, headers=None):
     """Make the request.
@@ -33,7 +41,7 @@ def request(self, method, url, body=None, headers=None):
     else:
         # Avoid modifying the headers passed into .request()
         headers = headers.copy()
-    if "user-agent" not in (six.ensure_str(k.lower()) for k in headers):
+    if "user-agent" not in (_ensure_str(k.lower()) for k in headers):
         headers["User-Agent"] = connection._get_default_user_agent()
     # The above is all the same ^^^
     # The following is different:

python/pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "langsmith"
-version = "0.1.141"
+version = "0.1.142"
 description = "Client library to connect to the LangSmith LLM Tracing and Evaluation Platform."
 authors = ["LangChain <support@langchain.dev>"]
 license = "MIT"