MimeWriter
— 一般 MIME 文件写入器
¶
从 2.3 版起弃用：
The
email
package should be used in preference to the
MimeWriter
module. This module is present only to maintain backward compatibility.
此模块定义类
MimeWriter
。
MimeWriter
class implements a basic formatter for creating MIME multi-part files. It doesn’t seek around the output file nor does it use large amounts of buffer space. You must write the parts out in the order that they should occur in the final file.
MimeWriter
does buffer the headers you add, allowing you to rearrange their order.
MimeWriter.
MimeWriter
(
fp
)
¶
返回新的实例化
MimeWriter
class. The only argument passed,
fp
, is a file object to be used for writing. Note that a
StringIO
object could also be used.
MimeWriter
实例具有下列方法：
MimeWriter.
addheader
(
key
,
值
[
,
prefix
]
)
¶
Add a header line to the MIME message. The
key
is the name of the header, where the
value
obviously provides the value of the header. The optional argument
prefix
determines where the header is inserted;
0
means append at the end,
1
is insert at the start. The default is to append.
MimeWriter.
flushheaders
(
)
¶
Causes all headers accumulated so far to be written out (and forgotten). This is useful if you don’t need a body part at all, e.g. for a subpart of type message/rfc822 that’s (mis)used to store some header-like information.
MimeWriter.
startbody
(
ctype
[
,
plist
[
,
prefix
]
]
)
¶
Returns a file-like object which can be used to write to the body of the message. The content-type is set to the provided
ctype
, and the optional parameter
plist
provides additional parameters for the content-type declaration.
prefix
functions as in
addheader()
except that the default is to insert at the start.
MimeWriter.
startmultipartbody
(
subtype
[
,
boundary
[
,
plist
[
,
prefix
]
]
]
)
¶
Returns a file-like object which can be used to write to the body of the message. Additionally, this method initializes the multi-part code, where
subtype
provides the multipart subtype,
boundary
may provide a user-defined boundary specification, and
plist
provides optional parameters for the subtype.
prefix
functions as in
startbody()
. Subparts should be created using
nextpart()
.
MimeWriter.
nextpart
(
)
¶
Returns a new instance of
MimeWriter
which represents an individual part in a multipart message. This may be used to write the part as well as used for creating recursively complex multipart messages. The message must first be initialized with
startmultipartbody()
before using
nextpart()
.
MimeWriter.
lastpart
(
)
¶
This is used to designate the last part of a multipart message, and should always be used when writing multipart messages.