不使用将 Pandas Dataframe as.csv 附加到 email 中。

Question

我有一个 pandas 数据帧，我想在 email 附件中作为 .csv 文件发送。 所以现在当我使用 df.to_csv() 时，每次都会下载文件。

我不想将文件保存在系统中，而只想将其作为 .csv 文件直接传递。 有没有办法做到这一点？

import pandas as pd

df = pd.DataFrame(output of sqlquery) # this data is dataframe output of a sql query. 

def send_email(sender, recipient, aws_region, subject, df):

client = boto3.client('ses', region_name=aws_region)

BODY_TEXT = "Hello,\r\nPlease find the attached file."
BODY_HTML = """\
<html>
<head></head>
<body>
<h1>Hello!</h1>
<p>Please find the attached file.</p>
</body>
</html>
"""

msg = MIMEMultipart('mixed')
msg['From'] = sender
print(msg['From'])
msg['To'] = recipient
msg['Subject'] = 'TOI Order Alert'

# The character encoding for the email.
CHARSET = "UTF-8"

msg_body = MIMEMultipart('alternative')
textpart = MIMEText(BODY_TEXT.encode(CHARSET), 'plain', CHARSET)
htmlpart = MIMEText(BODY_HTML.encode(CHARSET), 'html', CHARSET)


# Add the text and HTML parts to the child container.
msg_body.attach(textpart)
msg_body.attach(htmlpart)





# # Define the attachment part and encode it using MIMEApplication.
att = MIMEApplication(df.to_csv('test.csv'))
att.add_header('Content-Disposition','attachment; filename='+ 'test.csv')

# Attach the multipart/alternative child container to the multipart/mixed
# parent container.
msg.attach(msg_body)

# Add the attachment to the parent container.
msg.attach(att)



#Provide the contents of the email.
response = client.send_raw_email(
        Source=msg['From'],
        Destinations=[
            msg['To']
        ],
        RawMessage={
            'Data':msg.as_string(),
        }
    )

Answer 1

我建议以下

import io

s_buf = io.StringIO() 
df.to_csv(s_buf)
byte_buf = s_buf.encode()

并传入字节缓冲区

不使用将 Pandas Dataframe as.csv 附加到 email 中。

问题描述

1 个解决方案

解决方案1
1 2020-08-15 03:30:03

不使用将 Pandas Dataframe as.csv 附加到 email 中。

问题描述

1 个解决方案

解决方案1 1 2020-08-15 03:30:03

解决方案1
1 2020-08-15 03:30:03