Python Tutorial ( PDFDrive )

print "Current working dir : %s" % os.getcwdu()
# Close opened directory.
os.close( fd )
Let us compile and run the above program, this will produce the following result:
Current working dir : /var/www/html
Current working dir : /tmp
os.isatty(fd)
Description
The method isatty()returns True if the file descriptor fd is open and connected to a tty(-like) device, else False.
Syntax
Following is the syntax for isatty() method:
os.isatty( fd )
Parameters
• fd -- This is the file descriptor for which association needs to be checked.
Return Value
This method returns True if the file descriptor fd is open and connected to a tty(-like) device, else False.
Example
The following example shows the usage of isatty() method.
#!/usr/bin/python
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
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