UnicodeDecodeError：“ ascii”编解码器无法解码字节0xe3

Question

UnicodeDecodeError: 'ascii' codec can't decode byte 0xe3

I am facing this issue while running a mailing script in py 2.7 for the line...

msg.attach(MIMEText(welcome_msg + htmlMessageContent + footer_msg, 'html'))

Answer 1

One of the elements of the string you are concatenating

welcome_msg + htmlMessageContent + footer_msg

is Unicode, and another of them isn't. When you concatenate the strings Python has convert them all to a common type (Unicode), much as it does when you add an integer to a float. But the default string conversion to Unicode is ascii, and if the string contains a non-ascii character it will fail.

Find out which string isn't Unicode. For this you can use type() . Wrap that string in a call to unicode() that explains how you want '\\xe3' interpreted. For example, if '\\xe3' should be interpreted as 'ã' :

unicode(mystring, encoding='Latin-1')

Then your concatenation should work.