# Python program to explain os.tcgetpgrp() method 
  
# importing os module 
import os
  
  
# Get the/dev/tty file
# and get the file descriptor
# associated with it 
# using os.open() method
  
# '/dev / tty' is a special file
# which represents the
# controlling terminal of 
# the current process
fd = os.open("/dev/tty", os.O_RDWR)
  
  
# Get the process group associated
# with the terminal given by
# the specified file descriptor
# using os.tcgetpgrp() method
pgid = os.tcgetpgrp(fd)
  
# Print the process group
# associated with the controlling
# terminal of the current process
print("Process group associated with controlling\n \
         terminal of the current process:", pgid)
  
# Close the file descriptor
os.close(fd)

Process group associated with controlling
terminal of the current process: 19787