Quick and dirty debugging output for tired programmers.
Install q with pip install -U q.
All output goes to /tmp/q, which you can watch with this shell command:
tail -f /tmp/q
If $TMPDIR is set, the output goes to $TMPDIR/q. Note: Some alternatives to the TMPDIR variable are TEMP, TEMPDIR and TMP
To print the value of foo, insert this into your program:
import q; q(foo)
To print the value of something in the middle of an expression, insert "q()", "q/", or "q|". For example, given this statement:
file.write(prefix + (sep or '').join(items))
... you can print out various values without using any temporary variables:
file.write(prefix + q(sep or '').join(items)) # prints (sep or '')
file.write(q/prefix + (sep or '').join(items)) # prints prefix
file.write(q|prefix + (sep or '').join(items)) # prints the arg to write
To trace a function's arguments and return value, insert this above the def:
import q
@q
To start an interactive console at any point in your code, call q.d():
import q; q.d()
The following Lightning Talk shows how powerful using q can be.