cpython/Lib/email/mime/text.py

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# Copyright (C) 2001-2006 Python Software Foundation
# Author: Barry Warsaw
# Contact: email-sig@python.org
"""Class representing text/* type MIME documents."""
__all__ = ['MIMEText']
from email.charset import Charset
from email.mime.nonmultipart import MIMENonMultipart
class MIMEText(MIMENonMultipart):
"""Class for generating text/* type MIME documents."""
def __init__(self, _text, _subtype='plain', _charset=None):
"""Create a text/* type MIME document.
_text is the string for this message object.
_subtype is the MIME sub content type, defaulting to "plain".
_charset is the character set parameter added to the Content-Type
header. This defaults to "us-ascii". Note that as a side-effect, the
Content-Transfer-Encoding header will also be set.
"""
# If no _charset was specified, check to see if there are non-ascii
# characters present. If not, use 'us-ascii', otherwise use utf-8.
# XXX: This can be removed once #7304 is fixed.
if _charset is None:
try:
_text.encode('us-ascii')
_charset = 'us-ascii'
except UnicodeEncodeError:
_charset = 'utf-8'
if isinstance(_charset, Charset):
_charset = str(_charset)
MIMENonMultipart.__init__(self, 'text', _subtype,
**{'charset': _charset})
self.set_payload(_text, _charset)