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甲型六氯环己烷
原标题:Python exec NameError
  • 时间:2012-05-11 12:14:39
  •  标签:
  • python
  • scope

我有一个包含一项职能的细微变量。 职能如下:

def program():
    x[0] = y[1]
    z[0] = x[0]
    out = z[0]

这种方法包括:

def runExec(self, stringCode):
    x = [1,2,3,4]
    y = [5,6,7,8]
    z = [6,7,8,9]
    exec stringCode
    return out

我收到一个姓名,看来是x, y z, 无法从地狱外获得?

我如何使这些变量便于利用,我是否不得不以某种方式加以利用?

成就

最佳回答

<> 假设你有很好的理由使用exec,这是你应当重复检查的假设。

您需要为<代码>exec功能提供全球和地方范围。 此外,“图表”显示实际上需要运行,而不是仅仅界定功能。 这项工作将:

prog = """
x[0] = y[1]
z[0] = x[0]
out = z[0]
"""

def runExec(stringCode):
    x = [1,2,3,4]
    y = [5,6,7,8]
    z = [6,7,8,9]
    exec(stringCode, globals(), locals())
    return out

print runExec(prog)
问题回答

为什么需要使用<代码>exec? 以下守则应以同样方式运作,而不必填写exec:

def program(x, y, z):
    x[0] = y[1]
    z[0] = x[0]
    out = z[0]
    return out

def runExec(self, func):
    x = [1,2,3,4]
    y = [5,6,7,8]
    z = [6,7,8,9]
    out = func(x, y, z)
    return out

self.runExec(program)

你们能够使这些目标成为全球性的。

global x,y,z
def runExec(self, func):
    x = [1,2,3,4]
    y = [5,6,7,8]
    z = [6,7,8,9]
    out = func(x, y, z)
    return out




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