Convert list of integers to bit-mapped byte

[nilamo]

Is there a Python library that will handle this for me

Luckily, this isn't javascript.  We don't have a repository of functions that are only two lines each.


Try this: create a list of 8 items, and set all of them to zero.  Each item in your list of solenoids you want on, is then the index, so just set it to one.

Something like this:

>>> def bitmap(on_solenoids):
...   bits = [0 for _ in range(8)]
...   for solenoid in on_solenoids:
...     bits[solenoid] = 1
...   return bits
...
>>> bitmap([1, 3, 4, 7])
[0, 1, 0, 0, 1, 1, 0, 1]