transformations.py 文件源码

def turnPositive(a):
    """Take a negative number and make it positive"""
    if type(a) == ast.UnaryOp and type(a.op) == ast.USub:
        return a.operand
    elif type(a) == ast.Num and type(a.n) != complex and a.n < 0:
        a.n = a.n * -1
        return a
    else:
        log("transformations\tturnPositive\tFailure: " + str(a), "bug")
        return a