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#!/usr/bin/env python
"""
This example shows the interals of certain Python modules when they are being
imported.
"""
from pycallgraph2 import PyCallGraph
from pycallgraph2 import Config
from pycallgraph2.output import GraphvizOutput
def main():
import_list = (
'pickle',
'htmllib',
'urllib2',
)
graphviz = GraphvizOutput()
config = Config(include_stdlib=True)
for module in import_list:
graphviz.output_file = 'import-{}.png'.format(module)
with PyCallGraph(output=graphviz, config=config):
__import__(module)
if __name__ == '__main__':
main()
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