Update Response.raise_for_status() to respect follow_redirects parameter

docs/quickstart.md

@@ -305,6 +305,23 @@ The method returns the response instance, allowing you to use it inline. For exa
 >>> data = httpx.get('...').raise_for_status().json()
 ```
 
+### Controlling Redirect Behavior
+
+By default, `raise_for_status()` will raise an exception for redirect responses (3xx status codes). However, when you make a request with `follow_redirects=False`, the method automatically detects this and won't raise exceptions for redirect responses:
+
+```pycon
+# This will raise an exception for redirects (default behavior)
+response = httpx.get('https://httpbin.org/status/301')
+response.raise_for_status()  # Raises HTTPStatusError for 301 redirect
+
+# This will NOT raise an exception for redirects
+response = httpx.get('https://httpbin.org/status/301', follow_redirects=False)
+response.raise_for_status()  # No exception raised - treats redirect as successful
+```
+
+When `follow_redirects=False` is set on the request, HTTPX sets `response.next_request` for redirect responses, and `raise_for_status()` automatically detects this and treats redirects as successful responses.
+
+
 ## Response Headers
 
 The response headers are available as a dictionary-like interface.

httpx/_models.py

@@ -805,6 +805,10 @@ def raise_for_status(self) -> Response:
         if self.is_success:
             return self
 
+        # If follow_redirects is False, we should not raise a redirect error
+        if self.next_request is not None:
+            return self
+
         if self.has_redirect_location:
             message = (
                 "{error_type} '{0.status_code} {0.reason_phrase}' for url '{0.url}'\n"

tests/models/test_responses.py

@@ -145,6 +145,14 @@ def test_raise_for_status():
     with pytest.raises(RuntimeError):
         response.raise_for_status()
 
+    # If follow_redirects is False, we should not raise a redirect error
+    request_with_follow_redirects_false = httpx.Request(
+        "GET", "https://example.org", extensions={"follow_redirects": False}
+    )
+    response = httpx.Response(303, request=request_with_follow_redirects_false)
+    response.next_request = httpx.Request("GET", "https://other.org")
+    assert response.raise_for_status() is response
+
 
 def test_response_repr():
     response = httpx.Response(