Automatic conversion of numpy arrays

[klemenv]

Especially when returning a bumpy array, it would be great if we didn't have to explicitly convert it to Python list. An example of explicit conversion to Python list:

record(waveform, "Signal:X") {
  field(DTYP, "pydev")
  field(NELM, "600")
  field(FTVL, "DOUBLE")
  field(INP,  "@list(np.linspace(0, 0.75, 600))")
}

[PierreSchnizer]

I'd suggest to split the discussion in two steps:

• shall arrays be converted: alternative use numpy C-api and only pass the object
• how to convert floating point values Double input arguments: converting all digits #28

[PierreSchnizer]

An alternative would be to implement the buffer protocol for wrapping the waveform records. I think in this manner PyDevice would not depend on numpy.

https://jakevdp.github.io/blog/2014/05/05/introduction-to-the-python-buffer-protocol/