[QGIS-Developer] QGIS3 - processing python script. Read features from output layer

[kimaidou]

Hi all,

I have a simple processing python alg which
* generates a buffer with qgis:buffer
* use qgis:fieldcalculator to add an buf_area field -> the output vector of
my alg is this buffer+new field.

I would like to parse the features of the output vector in order to gather
some information and put it in a new string output. I have not been able to
get the layer object to perform a getFeatures on it.

See the code
http://paste.debian.net/1010463/

In line 32, my blayer is None
I think I am not using the good way to get the output vector layer
features? I tried to use the same way as for reading an input layer, but
oviously it is different.

Regards
Michaël
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