File I/O

Read and write files using context managers.

with open("data.txt", "w") as f:
    f.write("hello")

with open("data.txt") as f:
    print(f.read())

C# uses using with StreamWriter; JavaScript relies on the fs module.

Practice Questions

1. Which Python statement automatically closes a file?
   Answer

   `with`.
2. Name the Node.js module for file operations.
   Answer

   `fs`.