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Python os.isatty() Method

Hello dear readers! Welcome back to another section of our tutorial on Python. In this tutorial guide, we are going to be studying about the Os isatty() method.

Python os isatty() method returns True if the file descriptor fd is open and also connected to a tty(-like) device, else it returns False.


The following below is the syntax for Python Os isatty() method -

os.isatty( fd )

Parameter Details

  • fd - It is the file descriptor for which association needs to be checked.

Return Value

It returns True if the file descriptor fd is open and connected to a tty(-like) device, else it returns False.


The following below is a simple example -


import os, sys

# Open a file
fd = os.open( "foo.txt", os.O_RDWR|os.O_CREAT )

# Write one string
os.write(fd, "This is test")

# Now use isatty() to check the file.
ret = os.isatty(fd)

print "Returned value is: ", ret

# Close opened file
os.close( fd )

When the above code is executed, it will produce the following result -

Returned value is:  False

RECOMMENDED POST: Python os.getcwdu() Method

Alright guys! This is where we are rounding up for this tutorial post. In our next tutorial, we are going to be discussing about the Python OS lchflags() Method.

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