update README

2 files changed, 4 insertions, 4 deletions

diff --git a/IDEAS b/IDEAS
index fec7e196..d122be87 100644
--- a/IDEAS
+++ b/IDEAS
@@ -5,7 +5,6 @@ A collection of ideas and notes about stuff to implement in future versions.
 "#NNN" occurrences refer to bug tracker issues at:
 https://github.com/giampaolo/psutil/issues
 
-
 PLATFORMS
 =========
 
@@ -148,19 +147,16 @@ FEATURES
 
 - #550: number of threads per core.
 
-
 BUGFIXES
 ========
 
 - #600: windows / open_files(): support network file handles.
 
-
 REJECTED
 ========
 
 - #550: threads per core
 
-
 RESOURCES
 =========
 
diff --git a/README.rst b/README.rst
index 89342e84..c65ec1af 100644
--- a/README.rst
+++ b/README.rst
@@ -376,6 +376,7 @@ Further process APIs
 
 .. code-block:: python
 
+    >>> import psutil
     >>> for p in psutil.process_iter():
     ...     print(p)
     ...
@@ -384,6 +385,9 @@ Further process APIs
     psutil.Process(pid=3, name='ksoftirqd/0')
     ...
     >>>
+    >>> psutil.pid_exists(3)
+    True
+    >>>
     >>> def on_terminate(proc):
     ...     print("process {} terminated".format(proc))
     ...