Question

我有以下代码

def exec_sql_query(query):
    output = subprocess.check_output(
        [
            "mysql",
            "-h", config.sos.server,
            "-u", config.sos.username,
            "-p" + config.sos.password,
            "-D", config.sos.dataloaddatabase,
            "-sNL","--local-infile","-e",query
        ])
    return output.rstrip()

def email_notification_error(job_name, error_msg):

    server =  smtplib.SMTP(email_server)
    server.set_debuglevel(1)

    body = "<html><div>An Error has occured for job {0}.  Import did not complete.<br /><br />{1}</div></html>".fo$
    msg = MIMEText(body, 'html')
    msg['Subject'] = "Error Importing {0}. {1}".format(job_name, test_environment)
    msg['From'] = email_from
    msg['To'] = ','.join(email_to)
    server.sendmail(email_from,email_to,msg.as_string())
    server.quit()

#Main Entry Point
try
    exec_sql_query(refresh_query)
except subprocess.CalledProcessError as ex:
    error_msg = "Error {0} running mysql query: {1}".format(ex.returncode, ex.output)
    logger.error(error_msg)
    email_notification_error(job_name, error_msg)

运行时会发送有关错误的电子邮件。我收到了电子邮件，但我得到的只是

作业JOB出现错误。导入没有完成。

错误1运行mysql查询：

当我在EDI（如Toad）中运行该程序时，我得到了

列数与第1行的值计数不匹配

如何在电子邮件中获取MySQL错误消息？它似乎不在ex.output。

注意
该错误来自于我在INSERT INTO ... SELECT查询中注释了一个字段。我故意这样做是为了触发异常。

Answer 1

subprocess.check_output（）默认情况下不返回stderr。正如文档字符串所示：

The stdout argument is not allowed as it is used internally.
To capture standard error in the result, use stderr=STDOUT.

>>> check_output(["/bin/sh", "-c",
...               "ls -l non_existent_file ; exit 0"],
...              stderr=STDOUT)
'ls: non_existent_file: No such file or directory\n'

STDOUT是包相对的，所以你要使用subprocess.STDOUT。

获取subprocess.check_output以输出mysql错误

1 个答案: