- You can also index with the list index operator::
-
- sage: a = SymbolSequence('a')
- sage: a[1]
- a1
-
- This allows you to retrieve one-dimensional slices easily::
-
- sage: a = SymbolSequence('a')
- sage: a[0:5]
- [a0, a1, a2, a3, a4]
-
- If for whatever reason you prefer square brackets, the following
- also works::
-
- sage: a = SymbolSequence('a')
- sage: a[1,3]
- a13
-