updated whatsnew. to attempt to use requests, url_params cannot be empty

Author: Sky NSS

doc/source/whatsnew/v0.21.0.txt

@@ -93,8 +93,9 @@ parameters for basic auth, disable ssl strict check or even a requests.Session()
 .. ipython:: python
   import pandas as pd
 
-  # url_params is optional parameter 
-  df = pd.read_csv('https://uname:pwd@aa.com/bb.csv') # now url can contain username and pwd
+  # url_params is optional parameter. If it is non-empty, it attempts to use python-requests library
+  df = pd.read_csv('https://uname:pwd@aa.com/bb.csv', url_params= {'auth': None} ) # now url can contain username and pwd
+  # Note - all basic auth scenarios require python-requests library
 
   # Basic Auth
   df = pd.read_csv('https://aa.com/bb.csv', url_params={ 'auth': ('john', 'pwd') } ) # now url can contain username and pwd
@@ -128,7 +129,6 @@ parameters for basic auth, disable ssl strict check or even a requests.Session()
   df = pd.read_csv( 'https://aa.com/bbb.csv', url_params=s)
 
 
-
 .. _whatsnew_0210.api_breaking:
 
 Backwards incompatible API changes

pandas/io/common.py

@@ -246,9 +246,11 @@ def fetch_url(url, url_params=None, skip_requests=False):
     ------
     ValueError if url_params specified without installed python-requests pkg
     """
-    if is_requests_pkg_avail() and \
-            _is_handled_by_requests(url) and \
-            (not skip_requests):
+    if not url_params:
+        skip_requests = True
+    if (not skip_requests) and \
+            is_requests_pkg_avail() and \
+            _is_handled_by_requests(url):
         s = gen_session(url_params)
         resp = s.get(url)
         resp.raise_for_status()