How to write a specific part of a line in writeline

Question

I have an error log, which I need to writeline the error code from. The log usually ends in something like: "Error, problem number: 9478389439"

my code starts with:

for line in lines:
    if line.find('problem number:') >= 0:
      f.writeline(?????

I need to create a list with the error codes, and expand on it with other things. This json is being generated for multiple analysis. I can't just throw these on a db and find the results, I need a proper writeline .

Answer 1

you can try:

for line in lines:
    if line.find('problem number:') >= 0:
        f.write(line.split('problem number:')[-1].strip())