将 Sacred 模块与 iPython 结合使用

Question

我正在尝试设置sacredPython，并且正在阅读教程。我能够pip install sacred毫无问题地设置神圣使用。我在运行基本代码时遇到问题：

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"

我不确定为什么会返回此错误。该文档没有说明有关在运行代码之前设置实验文件的任何内容。任何帮助将不胜感激！

Answer 1

给出的回溯表明构造函数搜索Experiment其名称空间以查找定义其的文件。

因此，为了使示例正常工作，请将示例代码放入一个文件中并直接运行该文件。

如果您正在使用ipython，那么您始终可以尝试使用该%%python命令，该命令将在运行它之前有效地将您提供的代码捕获到文件中（在单独的 python 进程中）。