A simple Python wrapper for archive.org's "Save Page Now" capturing service
A simple Python wrapper for archive.org’s “Save Page Now” capturing service
$ pipenv install savepagenow
>>> import savepagenow
Capture a URL.
>>> archive_url = savepagenow.capture("http://www.example.com/")
See where it’s stored.
>>> print(archive_url) https://web.archive.org/web/20161018203554/http://www.example.com/
If a URL has been recently cached, archive.org may return the URL to that page rather than conduct a new capture. When that happens, the capture method will raise a CachedPage exception.
This is likely happen if you request the same URL twice within a few seconds.
>>> savepagenow.capture("http://www.example.com/") 'https://web.archive.org/web/20161019062637/http://www.example.com/' >>> savepagenow.capture("http://www.example.com/") Traceback (most recent call last): File "<stdin>", line 1, in <module> File "savepagenow/__init__.py", line 36, in capture archive_url savepagenow.exceptions.CachedPage: archive.org returned a cached version of this page: https://web.archive.org/web/20161019062637/http://www.example.com/
You can craft your code to catch that exception yourself, or use the built-in capture_or_cache method, which will return the URL provided by archive.org along with a boolean indicating if it is a fresh capture (True) or from the cache (False).
>>> savepagenow.capture_or_cache("http://www.example.com/") ('https://web.archive.org/web/20161019062832/http://www.example.com/', True) >>> savepagenow.capture_or_cache("http://www.example.com/") ('https://web.archive.org/web/20161019062832/http://www.example.com/', False)
There’s no accounting for taste but you could craft a line to handle that command like so:
>>> url, captured = savepagenow.capture_or_cache("http://www.example.com/")
The Python library is also installed as a command-line interface. You can run it from your terminal like so:
$ savepagenow http://www.example.com/
The command has the same options as the Python API, which you can learn about from its help output.
$ savepagenow --help Usage: savepagenow [OPTIONS] URL Archives the provided URL using the archive.org Wayback Machine. Raises a CachedPage exception if archive.org declines to conduct a new capture and returns a previous snapshot instead. Options: -ua, --user-agent TEXT User-Agent header for the web request -c, --accept-cache Accept and return cached URL --help Show this message and exit.
Customizing the user agent
In an effort to be transparent and polite to the Internet Archive, all requests made by savepagenow carry a custom user agent that identifies itself as "savepagenow (https://github.com/pastpages/savepagenow)".
You can further customize this setting by using the optional arguments to our API.
Here’s how to do it in Python:
>>> savepagenow.capture("http://www.example.com/", user_agent="my user agent here")
And here’s how to do it from the command line:
$ savepagenow http://www.example.com/ --user-agent "my user agent here"
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