即使安装了 Plotly.io 也看不到 psutil 包

Question

我正在尝试执行以下代码：

import numpy as np
import pandas as pd
import matplotlib.pyplot as plt
import matplotlib
%matplotlib inline
import seaborn as sns

import plotly.graph_objects as go

from plotly.offline import init_notebook_mode, iplot
init_notebook_mode(connected=True)

from sklearn.preprocessing import QuantileTransformer

import os

if not os.path.exists("images"):
    os.mkdir("images")

# import orca


import plotly.io as pio
pio.orca.config.executable = '/path/to/orca'
pio.orca.ensure_server()

import psutil

我得到：

ValueError                                Traceback (most recent call last)
<ipython-input-89-6e2b31e44303> in <module>
     25 import plotly.io as pio
     26 pio.orca.config.executable = '/path/to/orca'
---> 27 pio.orca.ensure_server()
     28 
     29 import psutil

~/Library/Python/3.7/lib/python/site-packages/plotly/io/_orca.py in ensure_server()
   1368 Install using conda:
   1369     $ conda install psutil
-> 1370 """
   1371         )
   1372 

ValueError: Image generation requires the psutil package.

Install using pip:
    $ pip install psutil

Install using conda:
    $ conda install psutil

该软件包已安装，我也重新安装了它以防万一，但不断收到错误消息。

最终目标是能够自动安全地生成图像 fig.write_image("images/fig1.png")

Answer 1

如果你想将绘图保存为图像。

对我有用的是安装kaleido然后使用 kaleido 引擎，例如

pip install Kaleidoplotly.io.write_image(fig, 'fig1.jpeg', format='jpeg',validate=False, engine='kaleido')

也请参阅以下问题/答案： How to saveplotlyexpressplot into a html or static image file?