httpmultipart

Table of Content

• Name
• Status
• Synopsis
• Description
• Exception
  • httpmultipart.MultipartError
  • httpmultipart.InvalidArgumentTypeError
• Constants
  • httpmultipart.Multipart.boundary
  • httpmultipart.Multipart.block_size
• Classes
  • httpmultipart.Multipart
• Methods
  • httpmultipart.Multipart.make_headers
  • httpmultipart.Multipart.make_body_reader
• Author
• Copyright and License

Name

httpmultipart

Status

The library is considered production ready.

Synopsis

#!usr/bin/env python
#coding: utf-8

import os

from pykit import httpmultipart
from pykit import fsutil

# http request headers
headers = {'Content-Length': 1200}

# http request fields
file_path = '/tmp/abc.txt'
fsutil.write_file(file_path, '123456789')
fields = [
    {
        'name': 'aaa',
        'value': 'abcde',
    },
    {
        'name': 'bbb',
        'value': [open(file_path), os.path.getsize(file_path), 'abc.txt']
    },
]

# get http request headers
multipart = httpmultipart.Multipart()
res_headers = multipart.make_headers(fields, headers=headers)

print res_headers

#output:
#{
#    'Content-Type': 'multipart/form-data; boundary=FormBoundaryrGKCBY7',
#    'Conetnt-Length': 1200,
#}

# get http request body reader
multipart = httpmultipart.Multipart()
body_reader = multipart.make_body_reader(fields)
data = []

for body in body_reader:
    data.append(body)

print ''.join(data)

#output:
#--FormBoundaryrGKCBY7
#Content-Disposition: form-data; name=aaa
#
#abcde
#--FormBoundaryrGKCBY7
#Content-Disposition: form-data; name=bbb; filename=abc.txt
#Content-Type: text/plain
#
#123456789
#--FormBoundaryrGKCBY7--

Description

This module provides some util methods to get multipart headers and body.

Exception

httpmultipart.MultipartError

syntax: httpmultipart.MultipartError

The base class of the other exceptions in this module. It is a subclass of Exception

httpmultipart.InvalidArgumentTypeError

syntax: httpmultipart.InvalidArgumentTypeError

A subclass of MultipartError Raise if the type of value is not a str or a list or the type of value[0] is not a string, string reader, file reader or file object

Constants

httpmultipart.Multipart.boundary

syntax: httpmultipart.Multipart.boundary

a placeholder that represents out specified delimiter

httpmultipart.Multipart.block_size

syntax: httpmultipart.Multipart.block_size

It represents the size of each reading file

Classes

httpmultipart.Multipart

syntax: httpmultipart.Multipart()

Methods

httpmultipart.Multipart.make_headers

syntax: httpmultipart.Multipart.make_headers(fields, headers=None)

Return a header according to the fields and headers

arguments:

• fields: is a list of the dict, and each elements contains name, value and headers, headers is an optional argument

  • name: It's a string that represents field's name

  • value: The value represents field's content. The type of value can be a string or a list, string indicates that the field is a normal string, However, there are three arguments of list: content, size and file_name

    • content: The type of content can be string, reader, file object The string type refers to the user want to upload a string. It takes the string as the field body

      The reader type refers to a generator. To read the contents of generator as the field body

      The file object type refers to a file object, To read the contents of file as the field body

    • size size refers to the length of the content, When the type of content is a string, size can be None

    • file_name file_name is an optional argument, if file_name is None, that indicates that content is uploaded as a normal field, whereas, the field as a file

  • headers: a dict, key is the field_header_name, value is the field_header_value, it contains user defined headers and the required headers, such as 'Content-Disposition' and 'Content-Type'

• headers: a dict of http request headers, key is the header_name, value is the header_value. It's a default argument and its default value is None

return: a dict that represents the request headers

httpmultipart.Multipart.make_body_reader

syntax httpmultipart.Multipart.make_body_reader(fields)

Return a body according to the fields

arguments:

• fields: refer to the explanation above fields

return: a generator that represents the multipart request body

Author

Ting Lv(吕婷) ting.lv@baishancloud.com

Copyright and License

The MIT License (MIT)

Copyright (c) 2017 Ting Lv(吕婷) ting.lv@baishancloud.com