Add code example in CI (#18228)

* test api example

* update python

* add sampcd_processor.py

* add if 0

* sort

* test paddle

* test paddle

* test paddle

* add whitelist

* change sampcd_processor.py

* change sampcd_processor.py

* change sampcd_processor.py

* add exit

* test=develop

* test=develop

paddle/scripts/paddle_build.sh

@@ -967,6 +967,18 @@ function build_document_preview() {
 }
 
 
+function example() {
+    pip install /paddle/build/python/dist/paddlepaddle-0.10.0-cp27-cp27mu-linux_x86_64.whl
+    paddle version
+    cd ${PADDLE_ROOT}/python/paddle/fluid
+    python sampcd_processor.py 
+    if [ "$?" != "0" ];then
+      echo "Code instance execution failed"
+      exit 1
+    fi
+}
+
+
 function main() {
     local CMD=$1
     local parallel_number=$2
@@ -981,6 +993,7 @@ function main() {
         build ${parallel_number}
         assert_api_not_changed ${PYTHON_ABI:-""}
         assert_api_spec_approvals
+        example
         ;;
       build)
         cmake_gen ${PYTHON_ABI:-""}
@@ -1073,6 +1086,9 @@ function main() {
         build ${parallel_number}
         build_document_preview
         ;;
+      api_example)
+        example
+        ;;
       *)
         print_usage
         exit 1