[CodeStyle] add more information when codestyle check failed (#47116)

tools/codestyle/pre_commit.sh

@@ -30,6 +30,7 @@ if ! [[ $(python -V 2>&1 | awk '{print $2}' | awk -F '.' '{print $1$2}') -ge 36
 fi
 
 diff_files=$(git diff --numstat ${BRANCH} | awk '{print $NF}')
+num_diff_files=$(echo "$diff_files" | wc -l)
 echo -e "diff files between pr and ${BRANCH}:\n${diff_files}"
 
 echo "Checking code style by pre-commit ..."
@@ -37,18 +38,31 @@ pre-commit run --files ${diff_files};check_error=$?
 
 if test ! -z "$(git diff)"; then
     echo -e '\n************************************************************************************'
-    echo -e "These files have been formated by code format hook. You should use pre-commit to \
+    echo -e "These files have been formatted by code format hook. You should use pre-commit to \
 format them before git push."
     echo -e '************************************************************************************\n'
     git diff 2>&1
 fi
 
-echo -e '\n***********************************'
+echo -e '\n************************************************************************************'
 if [ ${check_error} != 0 ];then
     echo "Your PR code style check failed."
+    echo "Please install pre-commit locally and set up git hook scripts:"
+    echo ""
+    echo "    pip install pre-commit==2.17.0"
+    echo "    pre-commit install"
+    echo ""
+    if [[ $num_diff_files -le 100 ]];then
+        echo "Then, run pre-commit to check codestyle issues in your PR:"
+        echo ""
+        echo "    pre-commit run --files" $(echo ${diff_files} | tr "\n" " ")
+        echo ""
+    fi
+    echo "For more information, please refer to our codestyle check guide:"
+    echo "https://www.paddlepaddle.org.cn/documentation/docs/zh/develop/dev_guides/git_guides/codestyle_check_guide_cn.html"
 else
     echo "Your PR code style check passed."
 fi
-echo -e '***********************************\n'
+echo -e '************************************************************************************\n'
 
 exit ${check_error}