Question

我想在matlab中调用tensorflow的python API（参见https://www.mathworks.com/help/matlab/matlab_external/call-python-from-matlab.html）。 matlab不支持“with”语句。我不能创建没有“with”语句的tf.variable_scope。我试过下面的两个代码，但两个都不起作用。有没有解决方案？

的Python：

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Matlab的：

import tensorflow as tf
with tf.variable_scope('123') as vs:
    print(vs.name)  # OK
vs2 = tf.variable_scope('456')
print(vs2.name)  # AttributeError: 'variable_scope' object has no attribute 'name'

Answer 1

您可以重写像

这样的python上下文

import tensorflow as tf

with tf.variable_scope('123') as vs:
    print(vs.name)  # OK


vs2_obj = tf.variable_scope('456')
vs2 = vs2_obj.__enter__()
try:
    print(vs2.name)  # OK as well
finally:
    vs2_obj.__exit__(None, None, None)

但我猜有一些网站效应。

说明：上下文对象vs2_obj与当前上下文vs2本身存在差异。

这给出了输出

123
456

Answer 2

另外，我编写了一个工具类来模仿matlab中的“with”语句。

helper.py：

background:url('image.jpg')

Matlab的：

class With(object):
    def __init__(self, obj):
        self._obj = obj
        self._p = self._obj.__enter__()

    def __del__(self):
        self._obj.__exit__(None, None, None)

    def get(self):
        return self._p

我可以在没有“with”语句的情况下调用tf.variable_scope吗？

2 个答案: