如下所示:
# -*- coding:utf-8 -*- # auth:ckf # date:20170703 import pandas as pd import cStringIO import warnings from sqlalchemy import create_engine import sys reload(sys) sys.setdefaultencoding('utf8') warnings.filterwarnings('ignore') engine = create_engine( 'postgresql+psycopg2://'数据库连接) filename = sys.argv[1] tablename = sys.argv[2] print '=== csvname is',filename ,'tablename is',tablename,'===' print 'read', filename, '...' df = pd.read_csv(filename, sep=';') print 'read', filename, 'done!' print 'lets insert ...' output = cStringIO.StringIO() # ignore the index df.to_csv(output, sep=' ',index = False, header = False) output.getvalue() # jump to start of stream output.seek(0) connection = engine.raw_connection() cursor = connection.cursor() # null value become '' cursor.copy_from(output,tablename,null='') connection.commit() cursor.close() print 'done!'
这个脚本可以直接运行,将csv文件放在同级目录即可。
csv第一列需要有列名,如果csv里没有列名,需要在代码中添加列名。
代码运行示例:python insert.py csvname tablename