diff --git a/patoolib/programs/bzip2.py b/patoolib/programs/bzip2.py
index 6b10a14..f45b75b 100644
--- a/patoolib/programs/bzip2.py
+++ b/patoolib/programs/bzip2.py
@@ -14,7 +14,6 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """Archive commands for the bzip2 program."""
-import os
 from .. import util
 
 
diff --git a/patoolib/programs/gzip.py b/patoolib/programs/gzip.py
index 129da2b..44772a4 100644
--- a/patoolib/programs/gzip.py
+++ b/patoolib/programs/gzip.py
@@ -14,7 +14,6 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """Archive commands for the gzip program."""
-import os
 from .. import util
 
 
diff --git a/patoolib/programs/lzma.py b/patoolib/programs/lzma.py
index bf82e03..961d52b 100644
--- a/patoolib/programs/lzma.py
+++ b/patoolib/programs/lzma.py
@@ -14,7 +14,6 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """Archive commands for the lzma program."""
-import os
 from .. import util
 
 
diff --git a/patoolib/programs/lzop.py b/patoolib/programs/lzop.py
index 62cb645..36759c8 100644
--- a/patoolib/programs/lzop.py
+++ b/patoolib/programs/lzop.py
@@ -14,7 +14,6 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """Archive commands for the lzop program."""
-import os
 from .. import util
 
 
diff --git a/patoolib/programs/uncompress.py b/patoolib/programs/uncompress.py
index 7832a93..535b7bf 100644
--- a/patoolib/programs/uncompress.py
+++ b/patoolib/programs/uncompress.py
@@ -14,7 +14,6 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """Archive commands for the uncompress.real program."""
-import os
 from .. import util
 
 
diff --git a/patoolib/programs/xz.py b/patoolib/programs/xz.py
index 3706ca3..0223251 100644
--- a/patoolib/programs/xz.py
+++ b/patoolib/programs/xz.py
@@ -14,7 +14,6 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """Archive commands for the xz program."""
-import os
 from .. import util