86 lines
5.9 KiB
Markdown
86 lines
5.9 KiB
Markdown
# whsk
|
|
|
|
**whsk** is a command line utility for web scraper authors.
|
|
|
|
It provides a set of utilities for inspecting HTML responses, and applying selectors against them.
|
|
|
|
## Installation
|
|
|
|
It is recommended you install whsk with `uvx` or `pipx`:
|
|
|
|
`uvx whsk` is the fastest way to get running with `whsk`
|
|
|
|
It currently consists of two utilities:
|
|
|
|
## whsk shell
|
|
|
|
`whsk shell` fetches a page, automatically parsing HTML, XML, or JSON responses.
|
|
It then opens an `ipython` shell allowing you to interact with the raw and parsed response.
|
|
|
|
When the command runs it will print a table of the variables it has loaded (which will depend on the type of page and particular flags passed):
|
|
|
|
```
|
|
variables
|
|
┌──────────┬───────────────────────┐
|
|
│ url │ https://example.com │
|
|
│ resp │ <Response [200 OK]> │
|
|
│ root │ lxml.html.HtmlElement │
|
|
│ selector │ //p │
|
|
│ selected │ 2 elements │
|
|
└──────────┴───────────────────────┘
|
|
|
|
In [1]:
|
|
```
|
|
|
|
The `In[1]`: is an `ipython` prompt, the variables in the table area available for inspection & usage.
|
|
|
|
### Options
|
|
|
|
```
|
|
Usage: whsk shell [OPTIONS] URL
|
|
|
|
Launch an interactive Python shell for scraping
|
|
|
|
╭─ Arguments ──────────────────────────────────────────────────────────────────────────╮
|
|
│ * url TEXT URL to scrape [default: None] [required] │
|
|
╰──────────────────────────────────────────────────────────────────────────────────────╯
|
|
╭─ Options ────────────────────────────────────────────────────────────────────────────╮
|
|
│ --ua TEXT User agent to make requests with │
|
|
│ --postdata -p TEXT POST data (will make a POST instead of GET) │
|
|
│ --header -h TEXT Additional headers in format 'Name: Value' │
|
|
│ --css -c TEXT css selector │
|
|
│ --xpath -x TEXT xpath selector │
|
|
│ --help Show this message and exit. │
|
|
╰──────────────────────────────────────────────────────────────────────────────────────╯
|
|
```
|
|
|
|
## whsk query
|
|
|
|
`whsk query` takes the same command line options as `whsk shell` but instead of opening a shell
|
|
will output the results of the `--css` or `--xpath` selection, and then exit immediately.
|
|
|
|
As such, you must provide *one* of the two selector parameters.
|
|
|
|
This can be used for rapid testing of queries without opening the shell each time.
|
|
|
|
### Options
|
|
|
|
```
|
|
Usage: whsk query [OPTIONS] URL
|
|
|
|
Run a one-off query against the URL
|
|
|
|
╭─ Arguments ─────────────────────────────────────────────────────────────────────────────────────────╮
|
|
│ * url TEXT URL to scrape [default: None] [required] │
|
|
╰─────────────────────────────────────────────────────────────────────────────────────────────────────╯
|
|
╭─ Options ───────────────────────────────────────────────────────────────────────────────────────────╮
|
|
│ --ua TEXT User agent to make requests with │
|
|
│ --postdata -p TEXT POST data (will make a POST instead of GET) │
|
|
│ --header -h TEXT Additional headers in format 'Name: Value' │
|
|
│ --css -c TEXT css selector │
|
|
│ --xpath -x TEXT xpath selector │
|
|
│ --help Show this message and exit. │
|
|
╰─────────────────────────────────────────────────────────────────────────────────────────────────────╯
|
|
|
|
```
|