fail to dump json if Parameter contains a bytes object (e.g. a string encoded to bytes)

[srio]

json_tricks does not support bytes objects. It may be useful in some cases, thus this is a potential problem.

from libpyvinyl.Parameters.Collections import CalculatorParameters


p = CalculatorParameters()
p.new_parameter("str1")
p["str1"] = 'customized string1'
print(p)
# this is OK
p.to_json("test_bytes1.json")


# now the string is encoded to a bytes object
p = CalculatorParameters()
p.new_parameter("str2")
p["str2"] = 'customized string2'.encode('UTF-8') # or just  p["str2"] = b'customized string'
print(p)
# this fails
p.to_json("test_bytes2.json")

also a numpy bytes fails:

# now numpy bytes object
import numpy
p = CalculatorParameters()
p.new_parameter("test3")
p["test3"] = numpy.array([1,2,3]).tobytes()
print(p)
# this fails
p.to_json("test_bytes3.json")

I see that json_tricks.np.dump() and json_tricks.nonp.dump() have a keywork conv_str_byte=False. Activating this may solve the problem for strings, but may not work for generic bytes.