Combine XPath, CSS Selectors and JSONPath for Web data extracting.
Project description
Combine XPath, CSS Selectors and JSONPath for Web data extracting.
Quickstarts
Installation
Install the stable version from PYPI.
pip install data-extractor
Or install the latest version from Github.
pip install git+https://github.com/linw1995/data_extractor.git@master
Usage
from data_extractor import Field, Item, JSONExtractor
class Count(Item):
followings = Field(JSONExtractor("countFollowings"))
fans = Field(JSONExtractor("countFans"))
class User(Item):
name_ = Field(JSONExtractor("name"), name="name")
age = Field(JSONExtractor("age"), default=17)
count = Count()
assert User(JSONExtractor("data.users[*]"), is_many=True).extract(
{
"data": {
"users": [
{
"name": "john",
"age": 19,
"countFollowings": 14,
"countFans": 212,
},
{
"name": "jack",
"description": "",
"countFollowings": 54,
"countFans": 312,
},
]
}
}
) == [
{"name": "john", "age": 19, "count": {"followings": 14, "fans": 212}},
{"name": "jack", "age": 17, "count": {"followings": 54, "fans": 312}},
]
Changelog
v0.5.4
9552c79 Fix:Simplified item’s extract_first method fail to raise ExtractError
08167ab Fix:Simplified item’s extract_first method should support param default
6e4c269 New:More unittest for testing the simplified items
a35b85a Chg:Update poetry.lock
e5ff37b Docs,Chg:Update travis-ci status source in the README.rst
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