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import sys, os
logprefix = ''
verbose = 0
def log(s):
try:
sys.stdout.flush()
sys.stderr.write(logprefix + s)
sys.stderr.flush()
except IOError:
# this could happen if stderr gets forcibly disconnected, eg. because
# our tty closes. That sucks, but it's no reason to abort the program.
pass
def debug1(s):
if verbose >= 1:
log(s)
def debug2(s):
if verbose >= 2:
log(s)
def debug3(s):
if verbose >= 3:
log(s)
class Fatal(Exception):
pass
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