Make internal python linter happy.

It seems that our internal linter is stricter than what pylint does.
Fixing the python code to make both happy and tries to fix the gap by
modifying pylintrc configuration file

.pylintrc

@@ -12,6 +12,12 @@ cache-size=500
 # Ignore Py3 files
 ignore=get_references_web.py,get_references_web_single_group.py
 
+load-plugins=
+    pylint.extensions.bad_builtin,
+    pylint.extensions.docparams,
+    pylint.extensions.docstyle,
+    pylint.extensions.redefined_variable_type,
+    pylint.extensions.overlapping_exceptions,
 
 [REPORTS]
 
@@ -32,6 +38,8 @@ disable-report=R0001,R0002,R0003,R0004,R0101,R0102,R0201,R0202,R0220,R0401,R0402
 # Error message template (continued on second line)
 msg-template={msg_id}:{line:3} {obj}: {msg} [{symbol}]
 
+# We don't need evaluation score
+score=no
 
 [MESSAGES CONTROL]
 # List of checkers and warnings to enable.
@@ -220,3 +228,8 @@ ignore-exceptions=AssertionError,NotImplementedError,StopIteration,TypeError
 # Number of spaces of indent required when the last token on the preceding line
 # is an open (, [, or {.
 indent-after-paren=4
+
+# Set the linting for string quotes
+string-quote=double
+triple-quote=double
+docstring-quote=double