使用pymysql查詢數(shù)據(jù)庫(kù),把結(jié)果保存為列表并獲取指定元素下標(biāo)的方法

from pymysql import *
from qmp.config import *

def main():
  conn = connect(host=HOST, port=3306, database=DATABASE, user=USER,
          password=PASSWORD, charset='utf8')
  cs1 = conn.cursor()
  sql1 = 'SELECT deal_name from ods_project_crawler_seed WHERE round = "-" order by id'
  cs1.execute(sql1)
  pnlist = []
  alldata = cs1.fetchall()
  for singl_company in alldata:
    pnlist.append(singl_company[0])

  print('列表總長(zhǎng)度: ', len(pnlist))
  cs1.close()
  conn.close()
  print('伯肯森自動(dòng)化在列表中的下標(biāo)為: ', pnlist.index('伯肯森自動(dòng)化'))

if __name__ == '__main__':
  main()

import pyodbc
import pandas as pd
import numpy as np
conn = pyodbc.connect(r'DRIVER={SQL Server Native Client 10.0};SERVER=.;DATABASE=數(shù)據(jù)庫(kù)名字;UID=用戶名;PWD=密碼') 
cur = conn.cursor() 
sqlcom = 'select 要讀取的列名 from 表名'
df = pd.read_sql(sqlcom, con=conn) print(df) print(type(df)) #<class'pandas.core.frame.DataFrame'> 
df1 = np.array(df) #先使用array()將DataFrame轉(zhuǎn)換一下
df2 = df1.tolist()#再將轉(zhuǎn)換后的數(shù)據(jù)用tolist()轉(zhuǎn)成列表
# 轉(zhuǎn)成列表的數(shù)據(jù)是這樣的[[123],['213'],['sa']],使用的時(shí)候稍注意一下
print(df2)
for i in range(0, len(df2)): 
  exist_url = df2[i][0] 
&#8203;&#8203;&#8203;&#8203;&#8203;&#8203;&#8203;  print(exist_url)