---input---
f"input={value:#06x}"

---tokens---
'f'           Literal.String.Affix
'"'           Literal.String.Double
'input='      Literal.String.Double
'{'           Literal.String.Interpol
'value'       Name
':'           Literal.String.Interpol
'#06x'        Literal.String.Double
'}'           Literal.String.Interpol
'"'           Literal.String.Double
'\n'          Text.Whitespace