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Diffstat (limited to 'Doc/library/email.util.rst')
| -rw-r--r-- | Doc/library/email.util.rst | 57 |
1 files changed, 55 insertions, 2 deletions
diff --git a/Doc/library/email.util.rst b/Doc/library/email.util.rst index 11bf3b2..bad0b24 100644 --- a/Doc/library/email.util.rst +++ b/Doc/library/email.util.rst @@ -29,13 +29,21 @@ There are several useful utilities provided in the :mod:`email.utils` module: fails, in which case a 2-tuple of ``('', '')`` is returned. -.. function:: formataddr(pair) +.. function:: formataddr(pair, charset='utf-8') The inverse of :meth:`parseaddr`, this takes a 2-tuple of the form ``(realname, email_address)`` and returns the string value suitable for a :mailheader:`To` or :mailheader:`Cc` header. If the first element of *pair* is false, then the second element is returned unmodified. + Optional *charset* is the character set that will be used in the :rfc:`2047` + encoding of the ``realname`` if the ``realname`` contains non-ASCII + characters. Can be an instance of :class:`str` or a + :class:`~email.charset.Charset`. Defaults to ``utf-8``. + + .. versionchanged:: 3.3 + Added the *charset* option. + .. function:: getaddresses(fieldvalues) @@ -74,6 +82,20 @@ There are several useful utilities provided in the :mod:`email.utils` module: indexes 6, 7, and 8 of the result tuple are not usable. +.. function:: parsedate_to_datetime(date) + + The inverse of :func:`format_datetime`. Performs the same function as + :func:`parsedate`, but on success returns a :mod:`~datetime.datetime`. If + the input date has a timezone of ``-0000``, the ``datetime`` will be a naive + ``datetime``, and if the date is conforming to the RFCs it will represent a + time in UTC but with no indication of the actual source timezone of the + message the date comes from. If the input date has any other valid timezone + offset, the ``datetime`` will be an aware ``datetime`` with the + corresponding a :class:`~datetime.timezone` :class:`~datetime.tzinfo`. + + .. versionadded:: 3.3 + + .. function:: mktime_tz(tuple) Turn a 10-tuple as returned by :func:`parsedate_tz` into a UTC timestamp. It @@ -105,6 +127,36 @@ There are several useful utilities provided in the :mod:`email.utils` module: ``False``. The default is ``False``. +.. function:: format_datetime(dt, usegmt=False) + + Like ``formatdate``, but the input is a :mod:`datetime` instance. If it is + a naive datetime, it is assumed to be "UTC with no information about the + source timezone", and the conventional ``-0000`` is used for the timezone. + If it is an aware ``datetime``, then the numeric timezone offset is used. + If it is an aware timezone with offset zero, then *usegmt* may be set to + ``True``, in which case the string ``GMT`` is used instead of the numeric + timezone offset. This provides a way to generate standards conformant HTTP + date headers. + + .. versionadded:: 3.3 + + +.. function:: localtime(dt=None) + + Return local time as an aware datetime object. If called without + arguments, return current time. Otherwise *dt* argument should be a + :class:`~datetime.datetime` instance, and it is converted to the local time + zone according to the system time zone database. If *dt* is naive (that + is, ``dt.tzinfo`` is ``None``), it is assumed to be in local time. In this + case, a positive or zero value for *isdst* causes ``localtime`` to presume + initially that summer time (for example, Daylight Saving Time) is or is not + (respectively) in effect for the specified time. A negative value for + *isdst* causes the ``localtime`` to attempt to divine whether summer time + is in effect for the specified time. + + .. versionadded:: 3.3 + + .. function:: make_msgid(idstring=None, domain=None) Returns a string suitable for an :rfc:`2822`\ -compliant @@ -115,7 +167,8 @@ There are several useful utilities provided in the :mod:`email.utils` module: may be useful certain cases, such as a constructing distributed system that uses a consistent domain name across multiple hosts. - .. versionchanged:: 3.2 domain keyword added + .. versionchanged:: 3.2 + Added the *domain* keyword. .. function:: decode_rfc2231(s) |