Log Message:
py-py: updated to 1.7.0

1.7.0:
- fix: use shutil.get_terminal_size() in Python 3.3+ to determine the size of the
  terminal, which produces more accurate results than the previous method.
- fix: introduce new PY_IGNORE_IMPORTMISMATCH environment variable
  that suppresses ImportMismatchError exceptions when set to 1.