xpathi 1.0.0

Library for generating XPath expressions as string using magic methods 🧙✨

It is a library for generating XPath expressions as string 🧙✨

Reasons to use xpathi:

• Code expressions look like real xpath expressions

• Returns string type, you needn’t convert it

• Implements many xpath features

• Dont have any dependencies

• Easy to extend, you can add custom methods and attributes in one line

Installation

pip install xpathi

Generating expressions

Easily create xpath expression using magic methods:

from xpathi.elements import *

xpath = div // a(text='link') / _href
print(type(xpath))
# <class 'str'>
print(xpath)
# .//div//a[text()="link"]/@href

xpath = div / div(_class='wrapper')[last() - 1] // a(contains(_href, 'google'), text='click') / _href
# .//div/div[@class="wrapper"][last()-1]//a[contains(@href, "google") and text()="click"]/@href

Result of expressions is always a valid xpath with string type. You can pass it like selector.xpath(div // a)

Specify tag like tag1 / tag2

Specify attribute like tag / _attribute (prefer this method) or tag.attribute

Specify parameters like tag(_attr1=val1, _attr2=val2, text=val3)

Specify order like tag[0], tag[last()], tag[last()-1], tag[-2]

Usage examples

Description	Code	Result
Single slash	div / a	.//div/a
Double slash	div // a	.//div//a
Parameters	div // a(_class='c1', _maxlength=10)	.//div//a[@class=”c1” and @maxlength=10]
Parameters text()	div / a(text='short', _class='c1')	.//div/a[text()=”short” and @class=”c1”]
Get attribute	div / a / _href	.//div/a/@href
Get attribute	div / a.href	.//div/a/@href
Get text attribute	div / a / text()	.//div/a/text()
Index	div / a[3] / p	.//div/a[3]/p
Index using last	div / a[last() - 1] / _href	.//div/a[last()-1]/@href
Index negative	div / a[-2] / _href	.//div/a[last()-1]/@href
Contains	div / a(contains(_href, 'https'), _class='c1')	.//div/a[contains(@href, “https”) and @class=”c1”]
Contains	div / a(contains('@href', 'https'), _class='c1')	.//div/a[contains(@href, “https”) and @class=”c1”]
Contains text()	div / a(contains(text(), 'https'), _class='c1')	.//div/a[contains(text(), “https”) and @class=”c1”]
Any tag (*)	div / any / a	.//div/*/a

See more examples in tests

If you use only one tag (without slash), than you should call .execute() method to convert it to string:

xpath = div(_class='wrapper').execute()
print(xpath)
# div[@class="wrapper"]

Custom tags and attributes

You can easy create custom tags, attributes and functions:

from xpathi.base import Element  # to create customs
from xpathi.elements import *  # to build xpath

tag = Element('tag')
_attribute = Element('@attribute')
function = Element('function()')

xpath = tag / _attribute / function
print(xpath)
# .//tag/@attribute/function()

xpath = tag(_attribute='val1', function='val2') // _attribute
print(xpath)
# .//tag[@attribute="val1" and function()="val2"]//@attribute

More

PyPI: https://pypi.org/project/xpathi

Repository: https://github.com/abionics/xpathi

Developer: Alex Ermolaev (Abionics)

Email: [e-mail]

License: MIT (see LICENSE.txt)