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File Manipulation Presentation

The document provides an overview of file handling in Python, covering operations such as creating, reading, writing, appending, and deleting files and directories. It includes code examples for each operation and highlights the use of different file modes. The presentation is limited to basic operations and does not address binary files or error handling.

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niranjan15171223
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19 views16 pages

File Manipulation Presentation

The document provides an overview of file handling in Python, covering operations such as creating, reading, writing, appending, and deleting files and directories. It includes code examples for each operation and highlights the use of different file modes. The presentation is limited to basic operations and does not address binary files or error handling.

Uploaded by

niranjan15171223
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Manipulating Files, Directories, and Text Files in Python

Presented by:

Dinesh Budha (10), Pralhad Kalakheti (21), Niranjan Kumar Singh (22)

2nd Semester, BME/2025


Introduction to File Handling
- Allows programs to create, read, write, delete files.

- Python has built-in support for these operations.


Creating a File
file = open("example.txt", "w")

file.write("Hello, this is a new file!")

file.close()

Output:

Hello, this is a new file!


Writing to a File
file = open("example.txt", "w")

file.write("Overwriting previous content.")

file.close()

Output:

Overwriting previous content.


Reading from a File
file = open("example.txt", "r")

content = file.read()

print(content)

file.close()

Output:

Overwriting previous content.


Summary for Student 1
- Operations: Create, Write, Read

- Used open() with modes: w, r


Appending to a File
file = open("example.txt", "a")

file.write("\nAppended line.")

file.close()

Output:

Overwriting previous content.

Appended line.
Deleting a File
import os

os.remove("example.txt")

Output:

File removed.
Creating a Directory
import os

os.mkdir("new_folder")

Output:

Folder new_folder created.


Removing a Directory
import os

os.rmdir("new_folder")

Output:

Folder removed.
Summary for Student 2
- Operations: Append, Delete File, Create/Remove Directory

- Directory must be empty to remove.


File Read Modes
"r" : Read (default)

"w" : Write (overwrite)

"a" : Append

"r+" : Read & Write


Reading Line by Line
file = open("lines.txt", "r")

for line in file:

print(line.strip())

file.close()

Output:

First line

Second line

Third line
Directory Structure Example
import os

print(os.getcwd())

print(os.listdir("."))

Output:

/user/home/project

[file1.txt, example.txt, folder]


Limitations of Presentation
- Only basic operations covered.

- Binary files and error handling not included.


Final Conclusion
- Simple but powerful tools.

- Essential for effective Python applications.

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