feat: add for loop, python version

for_loop.py

@@ -0,0 +1,11 @@
+#!/usr/bin/env python3
+
+if __name__ == "__main__":
+    strings = ["str1", "str2", "str3"]
+    print("length:", len(strings))
+    strings.append("str4")
+    strings.append("str5")
+    print("length:", len(strings))
+    strings.pop()
+    for s in strings:
+        print(s)