pyecharts绘图保存为图片 适用于ssh无头浏览器运行

网上搜索到的答案是使用chrome driver实现的， 但是本人的程序是运行在centos下的，centos下折腾chrome driver比较蛋疼，所以看了下pyecharts.render的源码，其实这个也支持使用无头phantomjs进行截图的，当然这个不是一般的直接截取屏幕，是通过JS代码把html里面的渲染图像下载下来，清晰度比普通截图要高很多很多。
 

make_snapshot(snapshot, bar.render(), f"data/{today}_cb.png", driver=driver)
 
在最后一行传入一个driver既可以了，这个driver使用phantomjs的实例。
 

import os

from pyecharts.render import make_snapshot

from snapshot_selenium import snapshot

import pandas as pd

from pyecharts import options as opts

from pyecharts.charts import Bar

import sys

from selenium import webdriver

from pyecharts.commons.utils import JsCode



if sys.platform == 'win32':

    SELENIUM_PATH = r'C:\OneDrive\Tool\phantomjs-2.1.1-windows\phantomjs-2.1.1-windows\bin\phantomjs.exe'

    driver = None

else:

    SELENIUM_PATH = './phantomjs'

    driver = webdriver.PhantomJS(executable_path=SELENIUM_PATH)

    

    

    bar = (

        Bar()

            .add_xaxis(list(result_dict .keys()))

            .add_yaxis(f"{today}-可转债价格分布", y_list, category_gap=3)

            .add_yaxis(f"{today}-正股价格分布", y_zg_list, category_gap=3)

            .set_series_opts(

            label_opts=opts.LabelOpts(is_show=True),

            axispointer_opts=opts.AxisPointerOpts(is_show=True))

            .set_global_opts(

            title_opts=opts.TitleOpts(title="可转债价格分布"),

            xaxis_opts=opts.AxisOpts(

                name="涨跌幅",

                is_show=True,

                name_rotate=30,

            ),

            graphic_opts=[

                opts.GraphicGroup(

                    graphic_item=opts.GraphicItem(

                        left="70%",

                        top="20%",

                    ),

                    children=[

                        opts.GraphicText(

                            graphic_item=opts.GraphicItem(

                                left="center",

                                top="middle",

                                z=100,

                            ),

                            graphic_textstyle_opts=opts.GraphicTextStyleOpts(

                                text=JsCode(

                                    f"['涨幅>=0：{bigger}',"

                                    f"'涨幅<0：{smaller}',"

                                    f"'平均涨幅：{avg}%',"

                                    f"'波动方差：{std}',"

                                    f"'',"

                                    f"'最大：{max_name}  {max_pct}%',"

                                    f"'最小：{min_name}  {min_pct}%',"

                                    "''].join('\\n')"

                                ),

                                font="14px Microsoft YaHei",

                                graphic_basicstyle_opts=opts.GraphicBasicStyleOpts(

                                    fill="#333"

                                )

                            )

                        )

                    ]

                )

            ],

        )



    )



    bar.render(os.path.join('data', f"{today}_cb.html"))

    make_snapshot(snapshot, bar.render(), f"data/{today}_cb.png", driver=driver)