added mutlipart file=strings

requests/models.py

@@ -32,7 +32,7 @@ from .utils import (
     DEFAULT_CA_BUNDLE_PATH)
 from .compat import (
     cookielib, urlparse, urlunparse, urljoin, urlsplit, urlencode, str, bytes,
-    is_py2)
+    StringIO, is_py2)
 
 # Import chardet if it is available.
 try:
@@ -348,6 +348,8 @@ class Request(object):
             else:
                 fn = guess_filename(v) or k
                 fp = v
+            if isinstance(fp, bytes):
+                fp = StringIO(fp)
             fields.update({k: (fn, fp.read())})
 
         (body, content_type) = encode_multipart_formdata(fields)

tests/test_requests.py

@@ -329,6 +329,21 @@ class RequestsTestSuite(TestSetup, TestBaseMixin, unittest.TestCase):
 
             self.assertEqual(post2.status_code, 200)
 
+    def test_POSTBIN_GET_POST_FILES_STRINGS(self):
+
+        for service in SERVICES:
+
+            url = service('post')
+
+            post1 = post(url, files={'fname.txt': 'fdata'})
+            self.assertEqual(post1.status_code, 200)
+
+            post2 = post(url, files={'fname.txt': 'fdata', 'fname2.txt':'more fdata'})
+            self.assertEqual(post2.status_code, 200)
+
+            post3 = post(url, files={'fname.txt': 'fdata', 'fname2.txt':open(__file__,'rb')})
+            self.assertEqual(post3.status_code, 200)
+
     def test_nonzero_evaluation(self):
 
         for service in SERVICES: