add eager mode for raising errors immediately

AUTHORS.rst

@@ -68,3 +68,4 @@ Patches and Suggestions
 - Christopher Davis
 - Ori Livneh
 - Jason Emerick
+- Bryan Helmig

requests/defaults.py

@@ -15,6 +15,7 @@ Configurations:
 :decode_unicode: Decode unicode responses automatically?
 :keep_alive: Reuse HTTP Connections?
 :max_retries: The number of times a request should be retried in the event of a connection failure.
+:eager_mode: If true, Requests will raise errors immediately.
 :safe_mode: If true, Requests will catch all errors.
 :pool_maxsize: The maximium size of an HTTP connection pool.
 :pool_connections: The number of active HTTP connection pools to use.
@@ -38,5 +39,6 @@ defaults['decode_unicode'] = True
 defaults['pool_connections'] = 10
 defaults['pool_maxsize'] = 10
 defaults['max_retries'] = 0
+defaults['eager_mode'] = False
 defaults['safe_mode'] = False
 defaults['keep_alive'] = True

requests/models.py

@@ -525,6 +525,9 @@ class Request(object):
             if prefetch:
                 # Save the response.
                 self.response.content
+            
+            if self.config.get('eager_mode'):
+                self.response.raise_for_status()
 
             return self.sent
 

test_requests.py

@@ -279,6 +279,16 @@ class RequestsTestSuite(unittest.TestCase):
         r.raise_for_status()
 
 
+    def test_default_status_raising(self):
+        config = {'eager_mode': True}
+        args = [httpbin('status', '404')]
+        kwargs = dict(config=config)
+        self.assertRaises(HTTPError, requests.get, *args, **kwargs)
+
+        r = requests.get(httpbin('status', '200'))
+        self.assertEqual(r.status_code, 200)
+
+
     def test_decompress_gzip(self):
 
         r = requests.get(httpbin('gzip'))