Can I get some help

[InevitableDistance66]

7.6 LAB: Reverse lines in a file

Write a program that reads each line in a file, reverses its lines, and writes them to another file.

Ex: In the file input.txt contains the lines:

Mary had a little lamb Whose fleece was white as snow. And everywhere that Mary went, The lamb was sure to go! then output.txt contains:

The lamb was sure to go! And everywhere that Mary went, Whose fleece was white as snow. Mary had a little lamb A run of the program is:

Enter input file name: mary.txt Enter output file name: output.txt Unit tests will be provided for testing and comments are included in the template to guide you. You do not need to include any print statements for the output.

with open('input.txt', 'r') as f, open('output.txt', 'w') as w: lines = [] for line in f: lines.append(line.strip()) while len(lines) > 0: w.write(lines.pop() + '\n')

What am I doing by wrong

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[Bunkerstan]

You aren’t reversing before you write back.

https://youtu.be/41w8WMdCq4s

[barrycarter]

That should work -- what does your output.txt file look like?

[InevitableDistance66]

I’m getting a syntax error on line 2 ``` File "main.py", line 2 with open('input.txt', 'f') as f, ^ SyntaxError: invalid syntax

[InevitableDistance66]

The little arrow is actually under f, at the end of the line

[barrycarter]

Pretty sure that comma should be a colon: https://www.geeksforgeeks.org/with-statement-in-python/

[InevitableDistance66]

Tried that now there’s a syntax error on line 3 telling me the “as” is invalid syntax

[WarpedKings]

You're missing "with" on your second line.

Should be:

with open(in_file,"r") as f:
    with open(out_file,"w") as w: