from __future__ import print_function

import sys, os, shutil, time

tstart = time.time()
if os.path.exists('test'):
    shutil.rmtree('test')
print('Deleting the tree took', time.time() - tstart)
os.mkdir('test')

try:
    xrange
except NameError:
    xrange = range

tstart = time.time()
for i in xrange(int(1e8)):
    with open('test/file-{}'.format(i), 'w') as f:
        pass
print('Creating the files took', time.time() - tstart)

with open('test/mymod.py', 'w') as f:
    f.write('''
greeting = "Hello world!"
''')

with open('test/program.py', 'w') as f:
    f.write('''
import mymod
print(mymod.greeting)
''')
shutil.copyfile('test/mymod.py', 'mymod.py')
shutil.copyfile('test/program.py', 'program.py')

tstart = time.time()
os.system('cd test && python2 program.py')
print('python2 took', time.time() - tstart)

tstart = time.time()
os.system('cd test && python3 program.py')
print('python3 took', time.time() - tstart)

tstart = time.time()
os.system('cd test && python2 ../program.py')
print('python2 took', time.time() - tstart)

tstart = time.time()
os.system('cd test && python3 ../program.py')
print('python3 took', time.time() - tstart)