scrapy-arweave 0.1.0

Scrapy is a popular open-source and collaborative python framework for extracting the data you need from websites. scrapy-arweave provides scrapy pipelines and feed exports to store items into Arweave.

Welcome to Scrapy-Arweave

Scrapy is a popular open-source and collaborative python framework for extracting the data you need from websites. scrapy-arweave provides scrapy pipelines and feed exports to store items into Arweave.

🏠 Homepage

Install

pip install scrapy-arweave

Examples

• scrapy-arweave-example
• scrapy-arweave-douban

Usage

1. Install scrapy-arweave and some additional requirements.

pip install scrapy-arweave

It has some requirements that must be installed as well:

Debian/Ubuntu

sudo apt-get install libmagic1

Windows

pip install python-magic-bin

OSX

• When using Homebrew: brew install libmagic
• When using macports: port install file

2. Add 'scrapy-arweave.pipelines.ImagesPipeline' and/or 'scrapy-arweave.pipelines.FilesPipeline' to ITEM_PIPELINES setting in your Scrapy project if you need to store images or other files to Arweave. For Images Pipeline, use:

ITEM_PIPELINES = {'scrapy_arweave.pipelines.ImagesPipeline': 1}

For Files Pipeline, use:

ITEM_PIPELINES = {'scrapy_arweave.pipelines.FilesPipeline': 1}

The advantage of using the ImagesPipeline for image files is that you can configure some extra functions like generating thumbnails and filtering the images based on their size.

Or You can also use both the Files and Images Pipeline at the same time.

ITEM_PIPELINES = {
 'scrapy_arweave.pipelines.ImagesPipeline': 0,
 'scrapy_arweave.pipelines.FilesPipeline': 1
}

If you are using the ImagesPipeline make sure to install the pillow package. The Images Pipeline requires Pillow 7.1.0 or greater. It is used for thumbnailing and normalizing images to JPEG/RGB format.

pip install pillow

Then, configure the target storage setting to a valid value that will be used for storing the downloaded images. Otherwise the pipeline will remain disabled, even if you include it in the ITEM_PIPELINES setting.

Add store path of files or images for Web3Storage, LightHouse, Moralis, Pinata or Estuary as required.

# For ImagesPipeline
IMAGES_STORE = 'ar://images'

# For FilesPipeline
FILES_STORE = 'ar://files'

For more info regarding ImagesPipeline and FilesPipline. See here

3. For Feed storage to store the output of scraping as json, csv, json, jsonlines, jsonl, jl, csv, xml, marshal, pickle etc set FEED_STORAGES as following for the desired output format:

from scrapy_arweave.feedexport import get_feed_storages
FEED_STORAGES = get_feed_storages()

Then set WALLET_JWK and GATEWAY_URL. And, set FEEDS as following to finally store the scraped data.

WALLET_JWK = "<WALLET_JWK>" # It can be wallet jwk file path or jwk data itself
GATEWAY_URL = "https://arweave.net"

FEEDS = {
   'ar://house.json': {
    "format": "json"
  },
}

See more on FEEDS here

4. Now perform the scrapping as you would normally.

Author

👤 Pawan Paudel

• Github: @pawanpaudel93

🤝 Contributing

Contributions, issues and feature requests are welcome!
Feel free to check issues page.

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Copyright © 2023 Pawan Paudel.