transformations.py 文件源码

def isNegative(a):
    """Is the give number negative?"""
    if type(a) == ast.UnaryOp and type(a.op) == ast.USub:
        return True
    elif type(a) == ast.Num and type(a.n) != complex and a.n < 0:
        return True
    else:
        return False