This is using Python can you please explain to me in detail this is for study guide

Write a program that read from an input file, and write to an output file. The contents

of this output file should be ONLY the even characters on all of the input files odd

lines to the output file. If that works and makes sense, now add code to write all of the

odd characters on all of the input files even lines to the output file. *Note: odd and

even lines in the input file are also going to be odd and even lines in the output file,

respectively. (see below)

The contents of this input file should be:

1212121212121212121212121212121212

3434343434343434343434343434343434

5656565656565656565656565656565656

7878787878787878878787878787878787

9090909090909090909090909090909090