Python For Beginners Chapter 7 #pythonlearning #pythoncode #pythonprogramming #pythonprograms

Python for Beginners: Chapter 7 - File Handling | Learn Python Programming

Welcome to Chapter 7 of our Python for Beginners series! In this lesson, we'll dive into file handling in Python, one of the most important skills for any beginner programmer. Whether you're looking to read, write, or manipulate files, this video will guide you step-by-step.

🔹 What You’ll Learn in This Video:

How to open, read, and write files using Python.
Understanding file modes (read, write, append) and their uses.
How to handle exceptions when dealing with files.
Working with text in Python.

🔹 Python for Beginners Series: This series is perfect for those new to programming and Python. We break down complex topics into simple, bite-sized lessons with clear, interactive examples to help you build confidence and knowledge step by step.

🔹 Key Topics Covered:

Reading and writing files in Python.
Managing file paths and directories.
Handling file operations with Python's built-in functions.
Working with external files
🔹 Resources:

If you’re new to Python, be sure to start with Chapter 1 to get up to speed before diving into this essential topic!

#PythonForBeginners #PythonTutorial #FileHandlingInPython #LearnPython #PythonProgramming #PythonFileOperations #PythonForBeginnersSeries #PythonTips #CodingForBeginners #LearnToCode #PythonBasics #PythonFileReading #PythonFileWriting #PythonProgrammingTutorial

Check out the Python for Beginners book for a complete guide with more examples and exercises.
👉 Related Keywords: Learn Python, Python tutorial for beginners, Python loops and conditionals, interactive Python programs, beginner Python projects
Check out the Python for Beginners book for a complete guide and more exercises!
👍 If you enjoyed this video, give it a thumbs up and share it with anyone starting their Python journey. Subscribe for more practical tutorials as we go through the book! 🚀
Let me know in the comments: What was your first Python program? 🐍

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[johngibbs]

Hello Ian,
I've enjoyed chapter seven greatly. Been having a little play with validation of files before writing, appending and reading. The code seems to be working, but I'm sure you will have a much better way of writing the code. Looking forward to your advice and help on this one.
P.S. I also have code comments uploaded in chapter five, not sure whether you've had a chance to read them. Thank you Ian, this whole python thing is keeping my brain active, not ready for Alzheimer's to take hold yet.

# Python for Beginners: Chapter 7 - File Handling

# a .txt

text_data = "Python for beginners: Chapter 7 - file handling"

file_path = "output.txt"

# Exception Handling
try:

with open(file_path, 'x') as file: # using mode = 'x' to check if file already exists before creating a new file.

file.write(text_data)

print(f"file '{file_path}' has been created successfully")

except FileExistsError:

print(f"The file '{file_path}' already exists")


# text to an existing .txt

import os

text_data = "Appending a text data line to an existing .txt file"

file_path = "output.txt"

if os.path.exists(file_path):
print("That file location exists!")
if os.path.isfile(file_path):
with open(file_path, 'a') as file: # using mode = 'a' to append data to an existing file.
file.write("\n" + text_data)
print(f"File '{file_path}' has been appended successfully")

elif os.path.isdir(path):
print("That is a directory!")
else:
print("That file location doesn't exist!")


# an existing .txt

text_data = "Appending a text data line to an existing .txt file"

file_path = "output.txt"

try:
with open(file_path, 'r') as file: # using mode = 'r' to open and read an existing file.

content = file.read()
print(content)

except FileNotFoundError:
print(f"The {file_path} file was not found")
except PermissionError:
print("Sorry, you do not have permission to read the {file_path} file")