Python中gmaps库在Jupyter Notebook无法渲染地图的报错求助

问题描述 #

目标是使用gmaps库生成并显示热力图，但运行代码后Jupyter Notebook无法显示地图，抛出如下错误。

运行代码 #

import gmaps
import gmaps.datasets
from matplotlib import pyplot as plt
import pandas as pd

gmaps.configure(api_key="AIzaSyCtd6p2bI-ZTdHvBlEXhhpO8xi5uHfiedk")
earthquake_df=gmaps.datasets.load_dataset_as_df("earthquakes")
print(earthquake_df.head())

locations = earthquake_df[['latitude', 'longitude']]
weights = earthquake_df['magnitude']
print(locations)
print(weights)

fig = gmaps.figure()
fig.add_layer(gmaps.heatmap_layer(locations=locations, weights=weights))
fig

错误信息 #

[Open Browser Console for more detailed log - Double click to close this message]
Model class 'FigureModel' from module 'jupyter-gmaps' is loaded but can not be instantiated
TypeError: Class constructor L cannot be invoked without 'new'
    at new t (http://localhost:8888/nbextensions/jupyter-gmaps/index.js?v=20231220195354:39:179771)
    at u._make_model (http://localhost:8888/nbextensions/jupyter-js-widgets/extension.js?v=20231220195354:2:747368)

解决方案 #

这个错误源于jupyter-gmaps版本与Leaflet库的兼容性冲突，按以下步骤修复：

• 卸载当前gmaps版本：pip uninstall -y gmaps
• 安装兼容的稳定版本（如0.9.0）：pip install gmaps==0.9.0
• 重新启用Jupyter Notebook扩展：jupyter nbextension enable --py gmaps
• 若使用Jupyter Lab，额外安装Lab扩展：jupyter labextension install @jupyter-widgets/jupyterlab-manager jupyter-gmaps
• 重启Jupyter环境后重新运行代码

另外确认你的Google API密钥已正确启用Google Maps JavaScript API权限。

内容的提问来源于stack exchange，提问作者İrem Ertürk 1