调用高德API逆地理编码，并做了QPS控制 - xd21303/Notebook GitHub Wiki

import pandas as pd
import time
import requests
from tqdm import tqdm

def get_first(pois):
    if len(pois) > 0:
        return pois[0].get('distance')
    else:
        return ''
pd.DataFrame(columns=data.columns).to_csv(filename, index=False)
for i in tqdm(range(0, data.shape[0], 20)):
    if i % 100 == 0:
        time.sleep(1)
    chunk = data.iloc[i:i + 20].copy()
    a = chunk['longcj'].round(6).astype('str').str.cat(
        chunk['latgcj'].round(6).astype('str'), sep=',')
    b = '|'.join(a.to_list())
    payload = {
        'key': '',
        'location': b,
        'roadlevel': '1',
        'radius': '100',
        'extensions': 'all',
        'batch': 'true'
    }
    r = requests.get("https://restapi.amap.com/v3/geocode/regeo?parameters",
                     params=payload)
    result = r.json()
    if result.get('status') == '1':
        regeocodes = pd.DataFrame(result.get('regeocodes'))
        # loc 是包含头和尾的，所以要 i + 19
        chunk.loc[i:i + 19, 'road_distance'] = regeocodes['roads'].apply(
            get_first).values
    else:
        print(result.get('info'))
    chunk.to_csv(filename, mode='a', index=False, header=False)