1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
|
Metadata-Version: 2.1
Name: xmltodict
Version: 0.12.0
Summary: Makes working with XML feel like you are working with JSON
Home-page: https://github.com/martinblech/xmltodict
Author: Martin Blech
Author-email: martinblech@gmail.com
License: MIT
Platform: all
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: MIT License
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 2
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.4
Classifier: Programming Language :: Python :: 3.5
Classifier: Programming Language :: Python :: 3.6
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: Implementation :: Jython
Classifier: Programming Language :: Python :: Implementation :: PyPy
Classifier: Topic :: Text Processing :: Markup :: XML
Requires-Python: >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*
Description-Content-Type: text/markdown
# xmltodict
`xmltodict` is a Python module that makes working with XML feel like you are working with [JSON](http://docs.python.org/library/json.html), as in this ["spec"](http://www.xml.com/pub/a/2006/05/31/converting-between-xml-and-json.html):
[](http://travis-ci.org/martinblech/xmltodict)
```python
>>> print(json.dumps(xmltodict.parse("""
... <mydocument has="an attribute">
... <and>
... <many>elements</many>
... <many>more elements</many>
... </and>
... <plus a="complex">
... element as well
... </plus>
... </mydocument>
... """), indent=4))
{
"mydocument": {
"@has": "an attribute",
"and": {
"many": [
"elements",
"more elements"
]
},
"plus": {
"@a": "complex",
"#text": "element as well"
}
}
}
```
## Namespace support
By default, `xmltodict` does no XML namespace processing (it just treats namespace declarations as regular node attributes), but passing `process_namespaces=True` will make it expand namespaces for you:
```python
>>> xml = """
... <root xmlns="http://defaultns.com/"
... xmlns:a="http://a.com/"
... xmlns:b="http://b.com/">
... <x>1</x>
... <a:y>2</a:y>
... <b:z>3</b:z>
... </root>
... """
>>> xmltodict.parse(xml, process_namespaces=True) == {
... 'http://defaultns.com/:root': {
... 'http://defaultns.com/:x': '1',
... 'http://a.com/:y': '2',
... 'http://b.com/:z': '3',
... }
... }
True
```
It also lets you collapse certain namespaces to shorthand prefixes, or skip them altogether:
```python
>>> namespaces = {
... 'http://defaultns.com/': None, # skip this namespace
... 'http://a.com/': 'ns_a', # collapse "http://a.com/" -> "ns_a"
... }
>>> xmltodict.parse(xml, process_namespaces=True, namespaces=namespaces) == {
... 'root': {
... 'x': '1',
... 'ns_a:y': '2',
... 'http://b.com/:z': '3',
... },
... }
True
```
## Streaming mode
`xmltodict` is very fast ([Expat](http://docs.python.org/library/pyexpat.html)-based) and has a streaming mode with a small memory footprint, suitable for big XML dumps like [Discogs](http://discogs.com/data/) or [Wikipedia](http://dumps.wikimedia.org/):
```python
>>> def handle_artist(_, artist):
... print(artist['name'])
... return True
>>>
>>> xmltodict.parse(GzipFile('discogs_artists.xml.gz'),
... item_depth=2, item_callback=handle_artist)
A Perfect Circle
Fantômas
King Crimson
Chris Potter
...
```
It can also be used from the command line to pipe objects to a script like this:
```python
import sys, marshal
while True:
_, article = marshal.load(sys.stdin)
print(article['title'])
```
```sh
$ bunzip2 enwiki-pages-articles.xml.bz2 | xmltodict.py 2 | myscript.py
AccessibleComputing
Anarchism
AfghanistanHistory
AfghanistanGeography
AfghanistanPeople
AfghanistanCommunications
Autism
...
```
Or just cache the dicts so you don't have to parse that big XML file again. You do this only once:
```sh
$ bunzip2 enwiki-pages-articles.xml.bz2 | xmltodict.py 2 | gzip > enwiki.dicts.gz
```
And you reuse the dicts with every script that needs them:
```sh
$ gunzip enwiki.dicts.gz | script1.py
$ gunzip enwiki.dicts.gz | script2.py
...
```
## Roundtripping
You can also convert in the other direction, using the `unparse()` method:
```python
>>> mydict = {
... 'response': {
... 'status': 'good',
... 'last_updated': '2014-02-16T23:10:12Z',
... }
... }
>>> print(unparse(mydict, pretty=True))
<?xml version="1.0" encoding="utf-8"?>
<response>
<status>good</status>
<last_updated>2014-02-16T23:10:12Z</last_updated>
</response>
```
Text values for nodes can be specified with the `cdata_key` key in the python dict, while node properties can be specified with the `attr_prefix` prefixed to the key name in the python dict. The default value for `attr_prefix` is `@` and the default value for `cdata_key` is `#text`.
```python
>>> import xmltodict
>>>
>>> mydict = {
... 'text': {
... '@color':'red',
... '@stroke':'2',
... '#text':'This is a test'
... }
... }
>>> print(xmltodict.unparse(mydict, pretty=True))
<?xml version="1.0" encoding="utf-8"?>
<text stroke="2" color="red">This is a test</text>
```
## Ok, how do I get it?
### Using pypi
You just need to
```sh
$ pip install xmltodict
```
### RPM-based distro (Fedora, RHEL, …)
There is an [official Fedora package for xmltodict](https://apps.fedoraproject.org/packages/python-xmltodict).
```sh
$ sudo yum install python-xmltodict
```
### Arch Linux
There is an [official Arch Linux package for xmltodict](https://www.archlinux.org/packages/community/any/python-xmltodict/).
```sh
$ sudo pacman -S python-xmltodict
```
### Debian-based distro (Debian, Ubuntu, …)
There is an [official Debian package for xmltodict](https://tracker.debian.org/pkg/python-xmltodict).
```sh
$ sudo apt install python-xmltodict
```
### FreeBSD
There is an [official FreeBSD port for xmltodict](https://svnweb.freebsd.org/ports/head/devel/py-xmltodict/).
```sh
$ pkg install py36-xmltodict
```
|
