X(), for low level debugging
Project description
X() is my function for low level ad hoc debug messages.
It takes a message and optional format arguments for use with %
.
It is presented here in its own module for reuse.
It normally writes directly to sys.stderr
but accepts an optional
keyword argument file
to specify a different filelike object.
If file
is not specified, its behaviour is further tweaked with
the globals X_logger
or X_via_tty
:
if X_logger then log a warning to that logger;
otherwise, if X_via_tty then open /dev/tty and write the message to it;
otherwise, write the message to sys.stderr.
Function X(msg, *args, **kw)
Unconditionally write the message msg
.
args
: if not empty, formatmsg
using %-expansion withargs
.file
: optional keyword argument specifying the output file.
If file
is not None, write to it unconditionally;
otherwise, if X_logger then log a warning to that logger;
otherwise, if X_via_tty then open /dev/tty and write the message to it;
otherwise write the message to sys.stderr.
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