Question

What I am trying to do here is :
1.read lines from a text file.
2.find lines that contain certain string.
3.delete that line and write the result in a new text file.

For instance, if I have a text like this:

Starting text
How are you?
Nice to meet you
That meat is rare
Shake your body

And if my certain string is ‘are’
I want the output as:

Starting text
Nice to meet you
Shake your body

I don’t want something like:

Starting text

Nice to meet you

Shake your body

I was trying something like this:

opentxt = open.('original.txt','w')
readtxt = opentxt.read()

result = readtxt.line.replace('are', '')

newtxt = open.('revised.txt','w')
newtxt.write(result)
newtxt.close()

But it don’t seem to work…

Any suggestions? Any help would be great!

Thanks in advance.

Answer 1

with open('data.txt') as f,open('out.txt') as f2:
    for x in f:
        if 'are' not in x:
            f2.write(x.strip()+'\n')  #strip the line first and then add a '\n', 
                                      #so now you'll not get a empty line between two lines