Python subexpressions示例

示例#1

文件： logic.py 项目： 99731/aima-python

def variables(s):
    """Return a set of the variables in expression s.
    >>> variables(expr('F(x, x) & G(x, y) & H(y, z) & R(A, z, 2)')) == {x, y, z}
    True
    """
    return {x for x in subexpressions(s) if is_variable(x)}

示例#2

def variables(s):
    """Retorna um conjunto das variáveis na expressão s."""
    return {x for x in subexpressions(s) if is_variable(x)}

示例#3

def variables(s):
    """Return a set of the variables in expression s.
    >>> variables(expr('F(x, x) & G(x, y) & H(y, z) & R(A, z, 2)')) == {x, y, z}
    True
    """
    return {x for x in subexpressions(s) if is_variable(x)}

示例#4

def variables(s):
    # return a set of the variables in expression s.

    return {x for x in subexpressions(s) if is_variable(x)}