Python3 os 模块 lseek 方法

#!/usr/bin/python3
import os, sys

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

# Write one string
line = "This is test"
b = line.encode()
os.write(fd, b)

# Now you can use fsync() method.
# Infact here you would not be able to see its effect.
os.fsync(fd)

# Now read this file from the beginning
os.lseek(fd, 0, 0)
line = os.read(fd, 100)
print ("Read String is : ", line.decode())

# Close opened file
os.close( fd )

print ("Closed the file successfully!!")