Python Forum

Hello

I want to compare string and bool.
Here is my function:

def MyFunction(qbt, Pauli):
    
    if qbt.QEO.state[0]=='Bell':
       ...

    elif qbt.QEO.state==False: qbt.QEO.state=False 
    else:
       raise NotImplementedError("Unknown State")  
    return  qbt.QEO.state    

However if my state is False, I cannot compare 'Bell' and False and I have this error:

Error:
Bool Object is not Subscriptable

It is probably because of this line:

if qbt.QEO.state[0]=='Bell'

If my state is False, then I cannot compare False and 'Bell'. How to solve this error?

What are the possible value types of state, in the above sample state is a bool, not a list so you cannot index it.
You might need to find out what type of value you're dealing with first.

This line is redundant

elif qbt.QEO.state==False: qbt.QEO.state=False 

if state is False then set state to False