fp.read无法读取整个csv文件

Question

I am attaching a csv file and sending it as an email. Same code has been working for my other codes but in this weird case it truncates the data in csv. Actual csv is 11 kb but attachment is of 8 kb. Actual file has 1400+ rows where as attachment only has some 1100 rows.

fp = open(path)
msg1 = MIMEText(fp.read())
print os.path.getsize(path)
attachment = msg1.add_header('Content-Disposition', 'attachment',     filename=name)
msg.attach(msg1)
print "Attached " + name
fp.close()

Issue is in this line of code - msg1 = MIMEText(fp.read()) , but I'm not able to figure out a solution.

Answer 1

We can't reproduce your problem without the original file, so this is only a guess.

The default behavior of open('file_path') is opening the file in text mode. If your CSV contains an EOF (end-of-file) character, then the fp.read() method may not return the whole file in some platforms.

Try to open the CSV in binary mode:

fp = open(path, 'rb')

[edit]

I'm unable to reproduce your problem.

>>> mt = MIMEText(open('/tmp/test_file.csv').read())
>>> len(mt.as_string().split('\n'))
1165

This has exactly the same number of lines of the original file plus the MIME headers:

$ wc -l /tmp/test_file.csv
1160 /tmp/test_file.csv

Please identify and closely inspect the shortest program necessary to reproduce the problem or this question will probably be closed because while similar questions may be on-topic here, as currently stated this one is unlikely to help future readers.