---input---
f"""{d[0
]}"""

---tokens---
'f'           Literal.String.Affix
'"""'         Literal.String.Double
'{'           Literal.String.Interpol
'd'           Name
'['           Punctuation
'0'           Literal.Number.Integer
'\n'          Text.Whitespace

']'           Punctuation
'}'           Literal.String.Interpol
'"""'         Literal.String.Double
'\n'          Text.Whitespace