Strings (and numbers and tuples) are immutable : Variable Immutable « Language Basics « Python

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Python » Language Basics » Variable Immutable Screenshots  Strings (and numbers and tuples) are immutable #Strings (and numbers and tuples) are immutable: you can't modify them. def change(n):          n[0] = 'Changed' names = ['A', 'B'] change(names) print names names = ['A', 'B'] n = names          # Again pretending to pass names as a parameter n[0] = 'Changed' # Change the list print names names = ['A', 'B'] n = names[:] print n is names print n == names n[0] = 'Changed' print n print names change(names[:]) print names                     Related examples in the same category 1.  A tuple is an immutable list