Files Handling in Python

str = raw_input("Enter your input: ");
print "Received input is : ", str

fo = open("foo.txt", "rw+")
print "Name of the file: ", fo.name
 
# Assuming file has following 5 lines
# This is 1st line
# This is 2nd line
# This is 3rd line
# This is 4th line
# This is 5th line
 
for index in range(5):
   line = fo.next()
   print "Line No %d - %s" % (index, line)
 
# Close opened file
fo.close()

f = None
for i in range (5):
    with open("data.txt", "w") as f:
        if i > 2:
            break
print(f.closed)