diff --git a/demos/python/python_glibc/.gitignore b/demos/python/python_glibc/.gitignore
new file mode 100644
index 00000000..4ba7c712
--- /dev/null
+++ b/demos/python/python_glibc/.gitignore
@@ -0,0 +1,3 @@
+occlum_instance/
+miniconda/
+Miniconda3*
diff --git a/demos/python/python_glibc/run_python_on_occlum.sh b/demos/python/python_glibc/run_python_on_occlum.sh
index 6e7ff867..ec8f969f 100755
--- a/demos/python/python_glibc/run_python_on_occlum.sh
+++ b/demos/python/python_glibc/run_python_on_occlum.sh
@@ -14,7 +14,7 @@ fi
 
 cd occlum_instance
 # Copy files into Occlum Workspace and build
-if [ ! -d "image/lib/python3" ];then
+if [ ! -L "image/bin/python3" ];then
     ln -s /opt/python-occlum/bin/python3 image/bin/python3
     cp -f /opt/occlum/glibc/lib/libdl.so.2 image/opt/occlum/glibc/lib/
     cp -f /opt/occlum/glibc/lib/libutil.so.1 image/opt/occlum/glibc/lib/
diff --git a/demos/python/.gitignore b/demos/python/python_musl/.gitignore
similarity index 100%
rename from demos/python/.gitignore
rename to demos/python/python_musl/.gitignore
diff --git a/demos/pytorch/.gitignore b/demos/pytorch/.gitignore
new file mode 100644
index 00000000..4ba7c712
--- /dev/null
+++ b/demos/pytorch/.gitignore
@@ -0,0 +1,3 @@
+occlum_instance/
+miniconda/
+Miniconda3*
diff --git a/demos/pytorch/run_pytorch_on_occlum.sh b/demos/pytorch/run_pytorch_on_occlum.sh
index 9f73c650..21f9e9ed 100755
--- a/demos/pytorch/run_pytorch_on_occlum.sh
+++ b/demos/pytorch/run_pytorch_on_occlum.sh
@@ -14,7 +14,7 @@ fi
 
 cd occlum_instance
 # Copy files into Occlum Workspace and build
-if [ ! -d "image/lib/python3" ];then
+if [ ! -L "image/bin/python3" ];then
     ln -s /opt/python-occlum/bin/python3 image/bin/python3
     cp -f /opt/occlum/glibc/lib/libdl.so.2 image/opt/occlum/glibc/lib/
     cp -f /opt/occlum/glibc/lib/libutil.so.1 image/opt/occlum/glibc/lib/