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# Licensed under the Apache License: http://www.apache.org/licenses/LICENSE-2.0
# For details: https://bitbucket.org/ned/coveragepy/src/default/NOTICE.txt
"""Run a simple trace function on a file of Python code."""
import os, sys
nest = 0
def trace(frame, event, arg):
global nest
if nest is None:
# This can happen when Python is shutting down.
return None
print "%s%s %s %d @%d" % (
" " * nest,
event,
os.path.basename(frame.f_code.co_filename),
frame.f_lineno,
frame.f_lasti,
)
if event == 'call':
nest += 1
if event == 'return':
nest -= 1
return trace
the_program = sys.argv[1]
sys.settrace(trace)
execfile(the_program)
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