POWER POINT FILE INPUT AND OUTPUT PRESENTATION.pptx

This is a Python programming presentation

1. FILE INPUT AND OUTPUT group four

2. Introduction to File Input and Output in Python File Input and Output (I/O) is a fundamental aspect of programming, allowing programs to interact with external files on the computer's storage like txt , csv , xml etc. In Python, file I/O is handled through built-in functions and methods that provide a convenient way to read from and write to files . File I/O is crucial for many applications, including data processing, configuration management, and logging. By reading from and writing to files, programs can store and retrieve data persistently, even after the program has finished running. Why File I/O is Important

3. Python's Built-in Functions and Methods for File I/O Python provides several built-in functions and methods for working with files : o pen(): Opens a file and returns a file object . c lose(): a file and returns a file object . r ead(): Reads the entire contents of a file . w rite(): Writes data to a file . r eadline(): Reads only the first line. r eadlines(): Reads your txt file line by line in an array format.

4. Modes for Opening Files When opening a file, you can specify a mode that determines how the file should be opened. The most common modes are : ‘r’: Read mode (default). Opens the file for reading . ‘w’: Write mode. Opens the file for writing. If the file already exists, it will be overwritten . ‘a’: Append mode. Opens the file for writing. New data will be appended to the end of the file. ‘r+’: Read/write mode. Opens the file for reading and writing . ‘w+’: Write/read mode. Opens the file for reading and writing. If the file already exists, it will be overwritten.

5. Reading from Files Use the read() method to read the entire contents of a file into a string . Use the readline() method to read a single line of the file.

6. Writing to Files Use the write() method to write a string to the file.

7. A ppending to Files Opens the file for writing. New data will be appended to the end of the file.

8. The end thank you