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File Handling in Python

The document explains file handling in Python, covering operations such as creating, reading, writing, and appending files using the open() function. It details various file modes ('r', 'w', 'a', 'x') and provides examples for writing to, reading from, and appending to files, as well as using the 'with' statement for automatic file closure. Overall, it emphasizes the importance of file handling for efficient data management.

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3 views2 pages

File Handling in Python

The document explains file handling in Python, covering operations such as creating, reading, writing, and appending files using the open() function. It details various file modes ('r', 'w', 'a', 'x') and provides examples for writing to, reading from, and appending to files, as well as using the 'with' statement for automatic file closure. Overall, it emphasizes the importance of file handling for efficient data management.

Uploaded by

r83226734
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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File Handling in Python - Reading and Writing (10 Marks)

In Python, file handling is used to perform operations such as creating, reading, writing, and
appending files. Python provides built-in functions for file handling using the open() function.

File Modes:
- 'r' - Read (default)
- 'w' - Write (creates or overwrites a file)
- 'a' - Append (adds to the end of the file)
- 'x' - Create a new file

Writing to a File:
-------------------
Example:
file = open("example.txt", "w")
file.write("Hello BOSS!\n")
file.write("Welcome to Python file handling.")
file.close()

Explanation:
- Opens 'example.txt' in write mode.
- Writes two lines into the file.
- Closes the file after writing.

Reading from a File:


---------------------
Example:
file = open("example.txt", "r")
content = file.read()
print("File Content:\n", content)
file.close()

Output:
File Content:
Hello BOSS!
Welcome to Python file handling.

Appending to a File:
----------------------
Example:
file = open("example.txt", "a")
file.write("\nThis line is newly added.")
file.close()

Reading Line by Line:


----------------------
Example:
file = open("example.txt", "r")
for line in file:
print(line.strip())
file.close()

Using 'with' Statement:


------------------------
Example:
with open("example.txt", "r") as file:
print(file.read())

Advantage:
- Automatically closes the file after reading or writing.

Conclusion:
File handling in Python is essential for storing and processing data. The read and write operations
help manage external files efficiently.

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