使用openpyxl从mysql导出excel以及使用xlwt从mysql导出excel

通过scrapy 我的数据库爬到了2w多的数据，想着尝试从mysql中导出到excel
于是尝试了 xlwt包+pymysql 在3.6的环境下导出，不曾想到，表中字段content内容过长，导致xlwt包没办法实现，通过搜索找到了openpyxl包，可以解决这个问题

但是一般字段长度的表还是能够用xlwt导出的
先给出xlwt的代码

xlwt+pymsql

import pymysql
import xlwt
import datetime


def get_excel(MYSQL_HOST, MYSQL_DANAME, MYSQL_USER, MYSQL_PASSWD, MYSQL_TABLE):
    connect = pymysql.connect(
        host=MYSQL_HOST,
        port=3306,
        db=MYSQL_DANAME,
        user=MYSQL_USER,
        passwd=MYSQL_PASSWD,
        charset='utf8',
        use_unicode=True
    )
    cursor = connect.cursor()
    sql = 'select * from %s' % (MYSQL_TABLE)
    cursor.execute(sql)
    connect.commit()
    results = cursor.fetchall()
    workbook = xlwt.Workbook()
    sheet = workbook.add_sheet('table_test', cell_overwrite_ok=True)
    fields = cursor.description
    for field in range(0, len(fields)):
        sheet.write(0, field, fields[field][0])
    row = 1
    col = 0
    for row in range(1, len(results) + 1):
        for col in range(0, len(fields)):
            try:
                sheet.write(row, col, u'%s' % results[row - 1][col])
            except:
                print('an error')

    workbook.save(r'./{0}{1}.xlsx'.format(MYSQL_DANAME, MYSQL_TABLE))


if __name__ == '__main__':
    starttime = datetime.datetime.now()
    MYSQL_HOST = 'localhost'  # 数据库地址
    MYSQL_DANAME = 'human'  # 数据库名称
    MYSQL_USER = 'root'  # 登陆用户
    MYSQL_PASSWD = 'root1234'  # 登陆密码
    MYSQL_TABLE = 'imageattchment'  # 要导出表的名称
    get_excel(MYSQL_HOST, MYSQL_DANAME, MYSQL_USER, MYSQL_PASSWD, MYSQL_TABLE)
    endtime = datetime.datetime.now()
    timespend = endtime - starttime
    print('花费了%s' % timespend)

openpyxl+pymysql

import pymysql
from openpyxl import Workbook
from openpyxl.writer.excel import ExcelWriter
from openpyxl.cell.cell import get_column_letter
import datetime


def get_excel(MYSQL_HOST, MYSQL_DANAME, MYSQL_USER, MYSQL_PASSWD, MYSQL_TABLE,
              # fields,#需要中文 就取消注释
              ):
    connect = pymysql.connect(
        host=MYSQL_HOST,
        port=3306,
        db=MYSQL_DANAME,
        user=MYSQL_USER,
        passwd=MYSQL_PASSWD,
        charset='utf8',
        use_unicode=True
    )
    cursor = connect.cursor()
    sql = 'select * from %s' % (MYSQL_TABLE)
    cursor.execute(sql)
    connect.commit()
    results = cursor.fetchall()
    fields_complex = cursor.description  # 字段名
    fields = []#要用到中文字段名 就需要注释
    for i in range(len(fields_complex)):
        fields.append(fields_complex[i][0])

    wb = Workbook()
    ws = wb.worksheets[0]
    ws.title = MYSQL_TABLE
    data = []
    data.append(fields)
    for i in results:
        data.append(i)
    i = 1
    for line in data:
        for col in range(1, len(line) + 1):
            ColNum = get_column_letter(col)
            ws.cell('%s%s' % (ColNum, i)).value = line[col - 1]
        i += 1
    wb.save(r'./{0}{1}.xlsx'.format(MYSQL_DANAME, MYSQL_TABLE))


if __name__ == '__main__':
    starttime = datetime.datetime.now()
    MYSQL_HOST = 'localhost'  # 数据库地址
    MYSQL_DANAME = 'human'  # 数据库名称
    MYSQL_USER = 'root'  # 登陆用户
    MYSQL_PASSWD = 'root1234'  # 登陆密码
    MYSQL_TABLE = 'imageattchment'  # 要导出表的名称
    fields = [
        'id', '标题', '时间', '文章地址', '文章内容', '文章分类', '文章来源', '图片id', '缩略图id', '图片对应的uuid',
    ]  # 设置中文标题 
    get_excel(MYSQL_HOST,
              MYSQL_DANAME,
              MYSQL_USER,
              MYSQL_PASSWD,
              MYSQL_TABLE,
              # fields,#设置中文 就取消注释
              )
    endtime = datetime.datetime.now()
    timespend = endtime - starttime
    print('花费了%s' % timespend)

顺便比较了下俩个包的导出速度
xlwt的速度

openpyxl速度

而且还比较了 俩个导出excel的占用大小

有兴趣的小伙伴可以自己研究下