def check_impl_detail(**guards):
guards, default = _parse_guards(guards)<EOL>return guards.get(platform.python_implementation().lower(), default)<EOL>
This function returns True or False depending on the host platform.
       Examples:
          if check_impl_detail():               # only on CPython (default)
          if check_impl_detail(jython=True):    # only on Jython
          if check_impl_detail(cpython=False):  # everywhere except on CPython