I need to replace my all the characters except ( ,* and +

Question

For example in this below string

inParkBrake != 1 * inParamABAFunc= AVL * (ABA_Actv_Stat=NACT + ABA_Actv_Stat=SNA + ABA_Actv_Stat=ERR)

I need

• inParkBrake != 1 to be replaced with 'a'

• inParamABAFunc= AVL to be replaced with 'b'

• ABA_Actv_Stat=NACT to be replaced with 'c'

• ABA_Actv_Stat=SNA to be replaced with 'd'

• ABA_Actv_Stat=ERR to be replaced with 'e'

Expected Output ->

a * b * (c + d + e)

After this I am going to expand using expand function

import sympy
from sympy import expand, symbols
a, b, c, d, e = symbols('a b c d e')
print(expand(a*b*(c+d+e)))

The output for the above is

a*b*c + a*b*d + a*b*e

Now all the values are substitued back

That is

inParkBrake != 1 * inParamABAFunc= AVL * ABA_Actv_Stat=NACT + inParkBrake != 1 * inParamABAFunc= AVL * ABA_Actv_Stat=SNA + inParkBrake != 1 * inParamABAFunc= AVL * ABA_Actv_Stat=ERR