尽管调用相同，Python unittest assert_调用了_with（）false

Question

我要打电话给unittestMock.assert_调用了（），得到以下错误，其中预期调用和实际调用看起来完全相同。（差异显示没有差异）这是预期的行为吗？有什么建议吗？在

错误：

E           AssertionError: Expected call: tabular_learner(<MagicMock name='TabularList.from_df().split_by_idx().label_from_df().databunch()' id='139820374227096'>, callback_fns=[functools.partial(<class 'fastai.callbacks.tracker.TrackerCallback'>, monitor='exp_rmspe'), functools.partial(<class 'fastai.callbacks.tracker.EarlyStoppingCallback'>, mode='min', monitor='exp_rmspe', min_delta=0.01, patience=1), functools.partial(<class 'fastai.callbacks.tracker.SaveModelCallback'>, monitor='exp_rmspe', mode='min', every='improvement', name='2019-03-05-16:32:30')], emb_drop=0.01, layers=[100, 100], metrics=<function exp_rmspe at 0x7f2a79504488>, ps=[0.001, 0.01], y_range=None)
E           Actual call: tabular_learner(<MagicMock name='TabularList.from_df().split_by_idx().label_from_df().databunch()' id='139820374227096'>, callback_fns=[functools.partial(<class 'fastai.callbacks.tracker.TrackerCallback'>, monitor='exp_rmspe'), functools.partial(<class 'fastai.callbacks.tracker.EarlyStoppingCallback'>, mode='min', monitor='exp_rmspe', min_delta=0.01, patience=1), functools.partial(<class 'fastai.callbacks.tracker.SaveModelCallback'>, monitor='exp_rmspe', mode='min', every='improvement', name='2019-03-05-16:32:30')], emb_drop=0.01, layers=[100, 100], metrics=<function exp_rmspe at 0x7f2a79504488>, ps=[0.001, 0.01], y_range=None)

测试代码（这是最后一个失败的assert_调用的代码）：

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Answer 1

如果您对回调函数是否相等不感兴趣，可以为断言中的特定参数提供^{}。例如：

from unittest.mock import ANY

...

mock_tabular_learner.assert_called_with(
    mock_tabular_list.from_df().split_by_idx().label_from_df().
    databunch(),
    layers=[100, 100],
    ps=[0.001, 0.01],
    emb_drop=0.01,
    metrics=exp_rmspe,
    y_range=None,
    callback_fns=ANY)  # We don't care about the callback functions