On 3/10/2023 7:07 PM, aapost wrote:
which does start to break down readability due to line length, as there
isn't really an indention rule set for something uncommonly used.
but some renaming makes the pattern clearer
pids.update({"messages" :subprocess.Popen(["cmd1"])}) if not
pids["messages"] else None,
pids.update({"syslog" :subprocess.Popen(["cmd2"])}) if not
pids["syslog"] else None,
pids.update({"kern" :subprocess.Popen(["cmd3"])}) if not pids["kern"]
else None,
pids.update({"user" :subprocess.Popen(["cmd4"])}) if not pids["user"]
else None,
I'd make the pattern in this example even more understandable and less
error-prone:
def update_pids(target):
cmd = ["tail", "-n", "1", "-f", f"/var/log/{target}"]
pids.update({target: subprocess.Popen(cmd)}) if not \
pids[target] else None
lambda x: ( # The Tk callback includes an event arg, doesn't it?
update_pids('messages'),
update_pids('syslog'),
# etc
)
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