What Are the Basic Ideas of File Input and Output in Programming?

Understanding file input and output (I/O) is very important for good programming. Let’s break down the main parts:

1. File Operations:

   • Opening a File: You can use a command like open("filename.txt", "r") to read a file.
   • Reading and Writing: There are simple methods you can use.
     • read() lets you get the content of a file.
     • write() helps you save new content to a file.
     • readlines() is used to get all the lines in a file.

2. User Input:

   • To make your program more interactive, you can collect information using input().

Here’s a quick example:

# Reading from a file
with open("data.txt", "r") as file:
    content = file.read()

# Writing to a file
with open("output.txt", "w") as file:
    file.write("Hello, World!")

These ideas help you manage data easily in your programs!