code: def _clear_context(bin_env=None):
      '''
      Remove the cached pip version
      '''
      contextkey = 'pip.version'
      if bin_env is not None:
          contextkey = '{0}.{1}'.format(contextkey, bin_env)
      __context__.pop(contextkey, Nonef _clear_context(bin_env=None):
      '''
      Remove the cached pip version
      '''
      contextkey = 'pip.version'
      if bin_env is not None:
          contextkey = '{0}.{1}'.format(contextkey, bin_env)
      __context__.pop(contextkey, None)
docs: Remove the cached pip version