Test if string ONLY contains given characters

Question

What\'s the easiest way to check if a string only contains certain specified characters in Python? (Without using RegEx or anything, of course)

Specifically, I have

Answer 1

Assuming the discrepancy in your example is a typo, then this should work:

my_list = ['aba', 'acba', 'caz']
result = [s for s in my_list if not s.strip('abc')]

results in ['aba', 'acba']. string.strip(characters) will return an empty string if the string to be stripped contains nothing but characters in the input. Order of the characters should not matter.