diff --git a/python.sh b/python.sh
old mode 100644
new mode 100755
index 6e2edfa9..d3249490
--- a/python.sh
+++ b/python.sh
@@ -1,10 +1,20 @@
+#!/bin/bash
 # À lancer par bash dans un shabang de la forme :
 #!/bin/bash /usr/scripts/python.sh
 #Ceci permet alors de lancer python avec un PYTHONPATH custom (/usr/scripts)
 #pour éviter de l'importer dans chaque script
-CPATH=/usr/scripts
-readlink -e $1 | grep "^/usr/scripts/" -q || {
-    f=`readlink -e $1`
+export CPATH=/usr/scripts
+BIN=python
+if [ "$1" = ipython ]; then
+  BIN=ipython
+  shift 1
+fi
+SCRIPT=$1
+if [ -z "$SCRIPT" ]; then
+  SCRIPT=$0
+fi
+readlink -e $SCRIPT | grep "^/usr/scripts/" -q || {
+    f=`readlink -e $SCRIPT`
     p=`dirname "$f"`
     while [ "$p" != "/" ]; do
         if [ -f "$p/CRANS_SCRIPTS_ROOT" ]; then
@@ -14,10 +24,11 @@ readlink -e $1 | grep "^/usr/scripts/" -q || {
         p=`dirname "$p"`
     done;
     echo "Dépôt custom. PYTHONPATH: $CPATH"
+    export CPATH
     test -f $CPATH/testing.sh && . $CPATH/testing.sh
 }
 for i in $CPATH/lib/python2.7/site-packages/*.egg; do
     CPATH=$CPATH:$i
 done
 CPATH=$CPATH:/usr/scripts/lib/python2.7/site-packages/
-/usr/bin/env PYTHONPATH=$CPATH python "$@"
+/usr/bin/env PYTHONPATH=$CPATH $BIN "$@"