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Python2.7 output format not getting as expected if body of email read from a file. user_info.txt is a file generated by another job which contains all the details of users. The output format of user_info.txt is nice. Where as sending that file as an email, output format changes completely. does am I doing something wrong when reading from the file? Can some body help me on this please?
script:
#!/usr/bin/env python
import smtplib
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
msg = MIMEMultipart('alternative')
msg['Subject'] = "User Info"
"""Create the body of the message"""
open_file = open('/tmp/user_info.txt')
user_info = MIMEText(open_file.read().encode("utf-8"), 'plain', 'utf-8')
msg.attach(user_info)
open_file.close()
"""Send the message via gmail SMTP server."""
server = smtplib.SMTP('smtp-relay.gmail.com', 587)
server.sendmail("admin", "[email protected]", msg.as_string())
server.quit()
sample user_info.txt
user_name Department_no ID detail1 detail2
aaaa 4 13 25088 32.000000
bbbbbbb 5 17 33280 42.000000
ccccccccccc 3 9 16896 22.000000
dddddd 5 17 33280 42.000000
eeeeeeeee 5 14 27136 36.000000
Email output:
user_name Department_no ID detail1 detail2
aaaa 4 13 25088 32.000000
bbbbbbb 5 17 33280 42.000000
ccccccccccc 3 9 16896 22.000000
dddddd 5 17 33280 42.000000
eeeeeeeee 5 14 27136 36.000000
Please check the email screenshot:
625
When sending email in MIMEText(... 'plain') format you don't have control over exactly how it is displayed by the reciever's mail client. Some will use variable width fonts, collapse whitespace, wrap lines in odd places - generally make your pretty fixed width table ugly.
One option is to send an html message body with the plain text as fallback.
...
msg = MIMEMultipart('alternative')
...
with open('/tmp/user_info.txt') as f:
raw_text = f.read()
msg.attach(MIMEText(raw_text, 'plain'))
msg.attach(MIMEText(convert_to_html(raw_text), 'html'))
That leaves the question of how to implement that convert_to_html() function. I can see two reasonable options:
<html>/<body> tags and a <pre>.If you have the data from before creating the text file, you might find it easier to make the table straight from that.
Either way, basic mail clients should fall back to the plain text version and fancy ones that insist on messing with layout will get the html version that specifies you want your message in table form.
149
Question ... output format changes completely. does am I doing something wrong when reading from the file
Tested with Python:3.4.2 and 2.7.9,
your code and given user_info.txt format with no failure.
Could receive user_info.txt in the same format.
So, you are doing nothing wrong.
Try the following, without sending your eMail, to verify your used email.mime module work as expected. The output should be OK.
result = user_info.get_payload(decode=True).decode('utf-8','ignore')
print(result)
In general there is no guarantee that a receiver of a eMail uses the same font, size or the same environment.
If you want to be sure, data layout looks the same use a Portabel Document Format.
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