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:
open(): Opens a file and returns a file object.
close(): a file and returns a file object.
read(): Reads the entire contents of a file.
write(): Writes data to a file.
readline(): Reads only the first line.
readlines(): 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. Appending to Files
Opens the file for writing. New data will be appended to the
end of the file.

8. THE END
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