Dynamic peewee Expression

solution.py

'''
Original quesion asked on twitter:
> Anyone out there a bit of a peewee guru? I want to via code add N clauses 
> to a "WHERE (A=1 AND B=2) OR (A=1 AND B=2) OR ... etc" type query?

For anyone curious, my solution was as follows,
'''

expressions = None
for cycle in cycles:
    expression = ((Model.field1 == cycle['val1']) & (Model.field1 == cycle['val2']))
    expressions = expressions | expression if expressions else expression

result = Model.select().where(expressions)

Pretty simple actually. Brain clearly wasn't working.