Add new check misplaced-format-function. (#2218)

* Add new check misplaced-format-function.

check only w.r.t print function.
For other use cases no-member check already exists.

fix code block not visible for few checkers

2 files changed, 15 insertions, 0 deletions

diff --git a/doc/whatsnew/2.0.rst b/doc/whatsnew/2.0.rst
index d8486d350..e01bfa842 100644
--- a/doc/whatsnew/2.0.rst
+++ b/doc/whatsnew/2.0.rst
@@ -31,6 +31,7 @@ New checkers
   which is redundant as in Python 3, every class implicitly inherits from object.
 
   .. code-block:: python
+
     class A(object):
         pass
 
@@ -44,6 +45,7 @@ New checkers
   behaviour.
 
   .. code-block:: python
+
     def foo():
         return None
 
@@ -74,6 +76,7 @@ New checkers
   This refactoring message is emitted when an import alias does not rename the original package.
 
   .. code-block:: python
+
     import numpy as numpy # bad
     import numpy as np # good
     from collection import OrderedDict as OrderedDict # bad
diff --git a/doc/whatsnew/2.1.rst b/doc/whatsnew/2.1.rst
index e010e0100..b0c9f7a5f 100644
--- a/doc/whatsnew/2.1.rst
+++ b/doc/whatsnew/2.1.rst
@@ -13,6 +13,18 @@ Summary -- Release highlights
 New checkers
 ============
 
+* A new check was added, ``misplaced-format-function``.
+
+  This message is emitted when pylint detects that a format function is called on non str object.
+  This can occur due to wrong placement of closing bracket, e.g
+
+  .. code-block:: python
+
+    print('value: {}').format(123) # bad
+
+    print('value: {}'.format(123)) # good
+
+
 Other Changes
 =============