Copy the last three lines of a text file in python?

Question

I\'m new to python and the way it handles variables and arrays of variables in lists is quite alien to me. I would normally read a text file into a vector and then copy the

Answer 1

First to answer your question, my guress is that you had an index error you should replace the line writeLine[i] with writeLine.append( ). After that, you should also do a loop to write the output :

text_file = open("Output.txt", "w")
for row in writeLine :
    text_file.write(row)
text_file.close()

May I suggest a more pythonic way to write this ? It would be as follow :

with open("Input.txt") as f_in, open("Output.txt", "w") as f_out :
    for row in f_in.readlines()[-3:] :
        f_out.write(row)