上限1w个，要打破1w，我也不知道咋办

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from Bio import Entrez
from http.client import IncompleteRead
import time

# 提供你的邮箱地址，以便NCBI了解数据访问者
Entrez.email = "your_email@example.com"

step = 10
term = "((root) AND ((develop*) OR (growth))) AND (soil comp*)"

# 在有total时候不起作用
max_results = 17783
handle = Entrez.esearch(db="pubmed", term=term, retmax=max_results, usehistory="y")
record = Entrez.read(handle)
total = int(record['Count'])
# total = max_results
webenv = record['WebEnv']
query_key = record['QueryKey']

with open('pubmed.txt', 'w', encoding="utf-8") as fw:
    for start in range(0, total, step):
        attempt = 0
        success = False
        print("Download record %i to %i" % (start + 1, int(start+step)))
        while attempt < 5 and not success:
            try:
                handle = Entrez.efetch(db="pubmed", retstart=start, retmax=step, webenv=webenv, query_key=query_key, rettype="docsum", retmode="text")
                record = handle.read()
                fw.write(record)
                # print(record)
                success = True
            except IncompleteRead as e:
                attempt += 1
                print(f'IncompleteRead error:{e},Retrying ({attempt}/5)...')
                time.sleep(5)
            except Exception as e:
                print(f'Unexpected error!{e}')
                break
# ids = record["IdList"]
# total = max_results