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−#!/usr/bin/env python
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−#
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−# Copyright 2007 Google Inc.
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−#
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−# Licensed under the Apache License, Version 2.0 (the "License");
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−# you may not use this file except in compliance with the License.
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−# You may obtain a copy of the License at
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−#
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−#     http://www.apache.org/licenses/LICENSE-2.0
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−#
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−# Unless required by applicable law or agreed to in writing, software
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−# distributed under the License is distributed on an "AS IS" BASIS,
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−# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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−# See the License for the specific language governing permissions and
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−# limitations under the License.
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−#
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−
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−"""Stub replacement for Python's imp module."""
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−
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−
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−import os
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−import sys
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−
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−
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−PY_SOURCE, PY_COMPILED, C_EXTENSION = 1, 2, 3
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−PKG_DIRECTORY, C_BUILTIN, PY_FROZEN = 5, 6, 7
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−
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−
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−def get_magic():
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−  return '\0\0\0\0'
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−
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−
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−def get_suffixes():
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−  return [('.py', 'U', PY_SOURCE)]
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−
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−
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−def new_module(name):
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−  return type(sys.modules[__name__])(name)
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−
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−
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−def lock_held():
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−  """Return False since threading is not supported."""
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−  return False
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−
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−def acquire_lock():
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−  """Acquiring the lock is a no-op since no threading is supported."""
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−  pass
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−
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−def release_lock():
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−  """There is no lock to release since acquiring is a no-op when there is no
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−  threading."""
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−  pass
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−
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−
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−def is_builtin(name):
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−  return name in sys.builtin_module_names
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−
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−
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−def is_frozen(name):
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−  return False
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−
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−
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−class NullImporter(object):
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−
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−  def __init__(self, path_string):
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−    if not path_string:
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−      raise ImportError("empty pathname")
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−    elif os.path.isdir(path_string):
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−      raise ImportError("existing directory")
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−
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−  def find_module(self, fullname):
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−    return None