sixcerpt.py 1.8 KB

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  1. """Excerpts of six.py"""
  2. # Copyright (C) 2010-2014 Benjamin Peterson
  3. #
  4. # Permission is hereby granted, free of charge, to any person obtaining a copy
  5. # of this software and associated documentation files (the "Software"), to deal
  6. # in the Software without restriction, including without limitation the rights
  7. # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  8. # copies of the Software, and to permit persons to whom the Software is
  9. # furnished to do so, subject to the following conditions:
  10. #
  11. # The above copyright notice and this permission notice shall be included in all
  12. # copies or substantial portions of the Software.
  13. #
  14. # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15. # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16. # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  17. # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18. # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  19. # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20. # SOFTWARE.
  21. import sys
  22. # Useful for very coarse version differentiation.
  23. PY2 = sys.version_info[0] == 2
  24. PY3 = sys.version_info[0] == 3
  25. if PY3:
  26. def reraise(tp, value, tb=None):
  27. if value.__traceback__ is not tb:
  28. raise value.with_traceback(tb)
  29. raise value
  30. else:
  31. def exec_(_code_, _globs_=None, _locs_=None):
  32. """Execute code in a namespace."""
  33. if _globs_ is None:
  34. frame = sys._getframe(1)
  35. _globs_ = frame.f_globals
  36. if _locs_ is None:
  37. _locs_ = frame.f_locals
  38. del frame
  39. elif _locs_ is None:
  40. _locs_ = _globs_
  41. exec("""exec _code_ in _globs_, _locs_""")
  42. exec_("""def reraise(tp, value, tb=None):
  43. raise tp, value, tb
  44. """)