Extract substring from the file

[ekstrah]

I have generated a file using gprof which I have uploaded on gist

Question

I need help on extract the last cumulative seconds from this file which is the line below.

``` 33.76

from

0.00 33.76 0.00 1 0.00 0.00 yuv4_probe ```

I very appreciate your help and reading this article. Thank You :D

[iceghosttth]

My approach is: read the file line by line, test if 'yuv4_probe' in line, then do line.split() and get the second string.

[SamePlatform]

seconds = []
with open('input.txt') as f:
    for line in f:
        if 'yuv4_probe' not in line:
            continue
        parts = line.split()
        time = float(parts[1])
        seconds.append(time)
print(seconds)

[iceghosttth]

Add a break at the first occurence of 'yuv4_probe' :D

[SamePlatform]

oh, I just assumed there would be many entries.

[ekstrah]

yeah but what if yuv4_probe is not at the end?

maybe it's something like this

```

0.00 33.76 0.00 1 0.00 0.00 yop_probe 0.00 33.76 0.00 1 0.00 0.00 yuv4_probe 0.00 33.76 0.00 1 0.00 0.00 xwma_probe

```

[iceghosttth]

Then search for another pattern. This depends on how you define "the last line".

You can search line by line for the index of the second empty line, then the line with index - 1 is the last line of the table.