我尝试重现在plotlyPython 中使用多个子图进行绘图的示例，该示例在此处作为第一个示例发布：“Python 中的子图”。我在 Jupyter notebook 中工作，plotly版本：3.10.0，Python版本：3.6.3。
运行该示例后：
from plotly.subplots import make_subplots
import plotly.graph_objs as go
from plotly.offline import download_plotlyjs, init_notebook_mode, plot, iplot
## Allow to generate plotly plots inline in notebook
init_notebook_mode(connected=True)
fig = make_subplots(rows=1, cols=2)
fig.add_trace(go.Scatter(x=[1, 2, 3], y=[4, 5, 6]), row=1, col=1)
fig.add_trace(go.Scatter(x=[20, 30, 40], y=[50, 60, 70]), row=1, col=2)
fig.update_layout(height=600, width=800, title_text="Subplots")
iplot(fig)
我得到了ValueError：
ValueError:
plotly.subplots.make_subplots may only be used in the
v4_subplots _plotly_future_ mode. To try it out, run
>>> from _plotly_future_ import v4_subplots
before importing plotly.
然后我from _plotly_future_ import v4_subplots在导入的最顶部添加。我清理了输出，用来%restet清理所有的变量，甚至刷新了笔记本，但是头条的代码：
from _plotly_future_ import v4_subplots
from plotly.subplots import make_subplots
import plotly.graph_objs as go from plotly.offline import download_plotlyjs,
init_notebook_mode, plot, iplot
# (...)
现在的结果是ImportError：
---------------------------------------------------------------------------
ImportError Traceback (most recent call last)
<ipython-input-14-d2ad52c99588> in <module>
----> 1 from _plotly_future_ import v4_subplots
2 from plotly.subplots import make_subplots
3 import plotly.graph_objs as go
4 from plotly.offline import download_plotlyjs, init_notebook_mode, plot, iplot
5
c:\users\karasma6\appdata\local\continuum\anaconda3\envs\actigrapy\lib\site-packages\_plotly_future_\v4_subplots.py in <module>
2 from _plotly_future_ import _future_flags, _assert_plotly_not_imported
3
----> 4 _assert_plotly_not_imported()
5 _future_flags.add('v4_subplots')
c:\users\karasma6\appdata\local\continuum\anaconda3\envs\actigrapy\lib\site-packages\_plotly_future_\__init__.py in _assert_plotly_not_imported()
9 if 'plotly' in sys.modules:
10 raise ImportError("""\
---> 11 The _plotly_future_ module must be imported before the plotly module""")
12
13
ImportError: The _plotly_future_ module must be imported before the plotly module
如何解决？