How to concatenate elements of different type in a table cell?

[Larz60+]

I'm still not sure what you're trying to do, but to use a 'list' in python
(which is an array), and split off the mantissa and exponent of a float,
you can use something like:

p = [2.07155254, -20.60156854, 19.5483871, 4.19432936]
# Split mantissa and exponent
for n, value in enumerate(p):
   parts = str(value).split('.')
   print('Value: {}, mantissa: {}, exponent: {}'.format(n, parts[0], parts[1]))

which will produce:

Output:
Value: 0, mantissa: 2, exponent: 07155254
Value: 1, mantissa: -20, exponent: 60156854
Value: 2, mantissa: 19, exponent: 5483871
Value: 3, mantissa: 4, exponent: 19432936