diff --git a/.gitignore b/.gitignore
index 20a2c14..f15d4b7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,5 +3,4 @@ run
 paramkey.txt
 *.log
 __pycache__/
-src
 .env
diff --git a/python/fastapi/src/__init__.py b/python/fastapi/src/__init__.py
new file mode 100755
index 0000000..e69de29
diff --git a/python/fastapi/src/utils.py b/python/fastapi/src/utils.py
new file mode 100755
index 0000000..9cc62ef
--- /dev/null
+++ b/python/fastapi/src/utils.py
@@ -0,0 +1,17 @@
+from pathlib import Path
+import os
+
+
+def get_project_dir():
+    return Path(__file__).parent.parent
+
+def get_pid():
+    return os.getpid()
+
+def check_path(paths: list):
+    for path in paths:
+        if os.path.exists(path) is False:
+            os.mkdir(path)
+
+def target_url(domain, path):
+    return f"{domain}/{path}"
diff --git a/python/fastapi_demo/src/__init__.py b/python/fastapi_demo/src/__init__.py
new file mode 100755
index 0000000..e69de29
diff --git a/python/fastapi_demo/src/utils.py b/python/fastapi_demo/src/utils.py
new file mode 100755
index 0000000..9cc62ef
--- /dev/null
+++ b/python/fastapi_demo/src/utils.py
@@ -0,0 +1,17 @@
+from pathlib import Path
+import os
+
+
+def get_project_dir():
+    return Path(__file__).parent.parent
+
+def get_pid():
+    return os.getpid()
+
+def check_path(paths: list):
+    for path in paths:
+        if os.path.exists(path) is False:
+            os.mkdir(path)
+
+def target_url(domain, path):
+    return f"{domain}/{path}"