diff --git a/lang/python/examples/encrypt-to-all.py b/lang/python/examples/encrypt-to-all.py
index bb8225b0..35873bde 100755
--- a/lang/python/examples/encrypt-to-all.py
+++ b/lang/python/examples/encrypt-to-all.py
@@ -26,7 +26,6 @@ from __future__ import absolute_import, print_function, unicode_literals
 del absolute_import, print_function, unicode_literals
 
 import sys
-import os
 import pyme
 
 with pyme.Context(armor=True) as c:
diff --git a/lang/python/examples/signverify.py b/lang/python/examples/signverify.py
index f12e0657..03bc0a64 100755
--- a/lang/python/examples/signverify.py
+++ b/lang/python/examples/signverify.py
@@ -23,7 +23,6 @@ from __future__ import absolute_import, print_function, unicode_literals
 del absolute_import, print_function, unicode_literals
 
 import sys
-import os
 import pyme
 from pyme.constants.sig import mode
 
diff --git a/lang/python/examples/simple.py b/lang/python/examples/simple.py
index ccd7cb49..5598487b 100755
--- a/lang/python/examples/simple.py
+++ b/lang/python/examples/simple.py
@@ -21,7 +21,6 @@ from __future__ import absolute_import, print_function, unicode_literals
 del absolute_import, print_function, unicode_literals
 
 import sys
-import os
 import pyme
 
 with pyme.Context(armor=True) as c:
diff --git a/lang/python/examples/verifydetails.py b/lang/python/examples/verifydetails.py
index 63f40c14..fa349269 100755
--- a/lang/python/examples/verifydetails.py
+++ b/lang/python/examples/verifydetails.py
@@ -21,7 +21,6 @@ from __future__ import absolute_import, print_function, unicode_literals
 del absolute_import, print_function, unicode_literals
 
 import sys
-import os
 from pyme import core
 from pyme.constants import protocol