Question

d = ['X + Y = Z', 'X <=Y']
p = [{'Y': 1, 'X': 0, 'Z': 0}, {'Y': 1, 'X': 0, 'Z': 3}, {'Y': 1, 'X': 0, 'Z': 6}, {'Y': 1, 'X': 0, 'Z': 9}, {'Y': 1, 'X': 1, 'Z': 0}, {'Y': 1, 'X': 1, 'Z': 3}]

I need to create create some structure which would store List of expressions, where variables are changed.

I need to know:
X, Y, Z current values
expressions with changed letters to integers

and it has to be for each dict of values

The problem is to see for what X,Y,Z, all expressions are True

Answer 1

According the expressions are made by you (so you can trust them), a simple solution is to use eval() like this :

correct_values = []
for value in p:
    #if eval(d[0], value) and eval(d[1], value):   # basic version
    if all(eval(exp, value) for exp in d):       # ehanced version thanks to @isbadawi
       correct_values.append(value)

but you’ll have to correct the expression X + Y = Z is not valid python, X + Y == Z is a valid python expression.

But with the values you gave in example, nothing is matching 🙁