def p_subscript12(p):
    p[0] = ast.Slice(lower=None, upper=p[2], step=p[4])
Returns true if the given action is one of git valid actions.
dataset/ETHPy150Open nucleic/enaml/enaml/core/parser.py/p_subscript12--crossover with--dataset/ETHPy150Open Djacket/djacket/core/backend/git/action.py/is_valid_git_action