[Solved] (Python3) Ignoring lines with control characters

Question

Long story short, I log the output of an in-house program with tee. The program displays a progress meter. When I read the file into a list, I end up with lines like:
>>> temp_file[18]
''Write: 1% [> ] 1 MB\x1b[2K\n'
I can filter these out with:
for line in temp_file:
if not '\x1b' in line:
do_something_with(line)
This leaves me with exactly what I want, but maybe someone knows of a better way? Thanks.
Last edited by alphaniner (2014-06-17 16:51:05)

Answer 1

progandy wrote:In my book printableset.issuperset is more readable than an any(for c in line), but that might be my mathematical knowledge about sets.
To each his own. A string is not a set and I would never ask a question like "Is the set of characters in this string a subset of the set of characters in string.printable?" On the other hand, "Is it true, for any character c in this string, that c is not in string.printable?" seems relatively straightforward. But that's a subjective measure.
Edit: Take care, since str.isprintable interprets tabs and newlines as non-printable. Maybe do str.expandtabs(1).isprintable().
Hrm. Yuck. No, in that case I'll fall back to my original version. Disclaimer removed.
Actually, on second thought, I don't know why I went for any() in the first place, since its complement/counterpart is also provided:
for line in temp_file:
if all(c in string.printable for c in line):
do_something_with(line)
Last edited by Trent (2014-06-15 21:51:05)