python中的API密钥

Question

再见！在

我试着运行这个程序：

import pandas as pd
import gmaps #import the gmaps library
import gmaps.datasets #imports the gmaps.datasets library

gmaps.configure(api_key='< API Key >') # Fill in with your API key

earthquake_df = gmaps.datasets.load_dataset_as_df('earthquakes') #equate your raw data to the designated dataset
earthquake_df.head()

locations = earthquake_df[['latitude', 'longitude']] #locate the 
weights = earthquake_df['magnitude']
fig = gmaps.figure()
fig.add_layer(gmaps.heatmap_layer(locations, weights=weights))
fig

但没有显示图像，而是出现以下错误：

^{pr2}$

我不知道那是什么意思？任何人，请帮帮我！谢谢！在