save project

.PY/.PY/.PY

+def say():
+print('say something')
+
+
+if if __name__ == "__main__":
+    print('demo 自己运行')
+    say()
\ No newline at end of file

.PY/.PY/1.py

+import demo
+
+print('use file')
+demo.say()
\ No newline at end of file