Question

我正在尝试为Python设置sacred，我正在浏览tutorial。我能够使用pip install sacred设置神圣而没有任何问题。我无法运行基本代码：

from sacred import Experiment

ex = Experiment("hello_world")

运行此代码将返回a ValueError：

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
<ipython-input-25-66f549cfb192> in <module>()
      1 from sacred import Experiment
      2 
----> 3 ex = Experiment("hello_world")

/Users/ryandevera/anaconda/lib/python2.7/site-packages/sacred/experiment.pyc in __init__(self, name, ingredients)
     42         super(Experiment, self).__init__(path=name,
     43                                          ingredients=ingredients,
---> 44                                          _caller_globals=caller_globals)
     45         self.default_command = ""
     46         self.command(print_config, unobserved=True)

/Users/ryandevera/anaconda/lib/python2.7/site-packages/sacred/ingredient.pyc in __init__(self, path, ingredients, _caller_globals)
     48         self.doc = _caller_globals.get('__doc__', "")
     49         self.sources, self.dependencies = \
---> 50             gather_sources_and_dependencies(_caller_globals)
     51 
     52     # =========================== Decorators ==================================

/Users/ryandevera/anaconda/lib/python2.7/site-packages/sacred/dependencies.pyc in gather_sources_and_dependencies(globs)
    204 def gather_sources_and_dependencies(globs):
    205     dependencies = set()
--> 206     main = Source.create(globs.get('__file__'))
    207     sources = {main}
    208     experiment_path = os.path.dirname(main.filename)

/Users/ryandevera/anaconda/lib/python2.7/site-packages/sacred/dependencies.pyc in create(filename)
     61         if not filename or not os.path.exists(filename):
     62             raise ValueError('invalid filename or file not found "{}"'
---> 63                              .format(filename))
     64 
     65         mainfile = get_py_file_if_possible(os.path.abspath(filename))

ValueError: invalid filename or file not found "None"

我不确定为什么会出现此错误。在运行代码之前，文档没有说明如何设置实验文件。任何帮助将不胜感激！

Answer 1

给出的回溯指示Experiment的构造函数搜索其命名空间以查找其定义的文件。

因此，要使示例正常工作，请将示例代码放入文件中并直接运行该文件。

如果您正在使用ipython，那么您可以尝试使用%%python命令，该命令将在运行之前有效地捕获您将其提供到文件中的代码（在单独的python进程中）。

Answer 2

根据文档，如果您在IPython / Jupyter中，您可以允许实验在不可重现的交互式环境中运行：

ex = Experiment('jupyter_ex', interactive=True)

https://sacred.readthedocs.io/en/latest/experiment.html#run-the-experiment

使用神圣模块与iPython

2 个答案: