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more docs, still wip

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Romain Dorgueil
2016-12-27 22:05:21 +01:00
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History
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**Bonobo** is a full rewrite of **rdc.etl**.
**rdc.etl** is a full python 2.7+ ETL library for which development started in 2012, and was opensourced in 2013 (see
`first commit <https://github.com/rdcli/rdc.etl/commit/fdbc11c0ee7f6b97322693bd0051d63677b06a93>`_).
Although the first commit in **Bonobo** happened late 2016, it's based on a lot of code, learnings and experience that
happened because of **rdc.etl**.
It would have been counterproductive to migrate the same codebase:
* a lot of mistakes were impossible to fix in a backward compatible way (for example, transormations were stateful,
making them more complicated to write and impossible to reuse, a lot of effort was used to make the components have
multi-inputs and multi-outputs, although in 99% of the case it's useless, etc.).
* we also wanted to develop something that took advantage of modern python versions, hence the choice of 3.5+.
**rdc.etl** still runs data transformation jobs, in both python 2.7 and 3, and we reuse whatever is possible to
build Bonobo.
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