# Python program to explain os.pread() method 
    
# importing os module 
import os
  
  
# Open the file and get
# the file descriptor associated
# with it using os.open() method
fd = os.open("Python_intro.txt", os.O_RDONLY)
  
  
# Number of bytes to be read
n = 50
  
# Read at most n bytes from 
# file descriptor fd
# using os.read() method
readBytes = os.read(fd, n)
  
# Print the bytes read
print(readBytes)
  
  
# Now set the Offset value 
offset = 20
   
# Read at most n bytes from 
# file descriptor fd at a position of
# given offset value using os.pread() method
readBytes = os.pread(fd, n, offset)
  
# Print the bytes read
print(readBytes)
  
# close the file descriptor
os.close(fd)

b'Python is a widely used general-purpose, high leve'
b'sed general-purpose, high level programming langua'