Check if string only contains characters from list of characters/symbols?

Question

How can I check in Python 3 that a string contains only characters/symbols from a given list?

Given:

• a list allowedSymbols = [\'b\', \'c\', \'z\', \'

Answer 1

I am not a python expert, but something below will work

 for c in enteredpass:
   if c not in allowedSymbols: 
      return 0