add_line (works now)

from sys import argv

script, filename = argv

print("Opening", filename)
print("""
    Would you like to add lines to %s?
    \n RETURN for yes
    \n ^C for no
    """) % filename
raw_input("...")

test_text = open(filename, 'r')
print(test_text.read())

print("""
    What would you like to replace this text with?
    Add three lines.
    """)
test_text = open(filename, 'w')
test_text.write(
    raw_input("Line 1: ") + '\n' +
    raw_input("Line 2: ") + '\n' +
    raw_input("Line 3: ") + '\n'
    )
test_text.close()

test_text = open(filename, 'r')
print("\n Here is your new file:\n")
print(test_text.read())
test_text.close()

print("Hit RETURN to close program.")
raw_input("...")

#worked out of an 'IOError: [Errno 0] Error'