Hi, I've a list of long files of numerical data ending with footer lines (beginning with #). I am using numpy.loadtxt to read the numbers, and loadtxt ignores these footer lines. I want the numpy code to read one of the footer lines and extract words from it. Is there a way to use loadtxt for this? If there weren't many files I could have used the line number (which keep varying between the files) of the footer line along with *linecache.* Nevertheless there should be a generic way to do this in numpy?
As a workaround, I've tried using os.system along with grep. And I get the following output : *>>> os.system("grep -e 'tx' 'data.dat' ")* * ## tx = 2023.06 * *0* Why is there a 0 in the output? The file has no blank lines. Since I want the value 2023.06 in the numpy code for later use I tried to pipe the output to a variable:- *test = os.system(command)* But that isn't working as *test* is getting assigned the value 0. Tried *subprocess.call(['grep','-e','tx','data.dat'])* which is also ending up in the same fashion. It'll be great if I can get to know (i) a way to read the footer lines (ii) to sort out the operation of os.system and subprocess.call output processing. Thanks, Resmi
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