readable(): checks if a file object allows read operations

readable()

In file read mode ( r )

fob=open('data1.txt','r')
print(fob.readable()) # True

Using write mode

fob=open('data1.txt','w')
print(fob.readable()) # False

Using append mode

fob=open('data1.txt','a')
print(fob.readable()) # False

Using read and write

fob=open('data1.txt','+a')
print(fob.readable()) # True

Handling Non-Existent Files

When trying to open a file that doesn't exist, Python will raise an error. We can handle this with a try-except block:

try:
    fob = open('non_existent.txt', 'r')
    print(fob.readable())
except FileNotFoundError:
    print("File not found.")

Use Case: Checking Read Permissions

This can be useful in scenarios where a program needs to ensure read access before processing the file:

fob = open('data.txt', 'r')
if fob.readable():
    print("File is readable, proceeding with operations.")
else:
    print("File is not readable.")

Subhendu Mohapatra

Author & Instructor at plus2net

I write and maintain practical tutorials on Python, PHP, SQL, JavaScript, HTML, jQuery, and web development at plus2net. The tutorials focus on clear explanations, working examples, and code that readers can test and adapt while learning.

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