SOlution

app/main.py

@@ -1,6 +1,15 @@
-def main():
+def main() -> None:
     # write your code here
-    pass
+    file_name = input("Enter name of the file: ")
+    file_lines = []
+    while True:
+        file_line = input("Enter new line of content: ")
+        if file_line == "stop":
+            break
+        file_lines.append(file_line)
+    with open(f"{file_name}.txt", "w") as file:
+        for line in file_lines:
+            file.write(f"{line}\n")
 
 
 if __name__ == "__main__":

hello_world

@@ -0,0 +1,3 @@
+Python is great!
+FastApi is becoming popular
+What will be with Django in the future?

name1

@@ -0,0 +1,2 @@
+This is the first line of content
+This is the second