f'The value is {value}.'

f"The value is {'4'}."

f'input={value!s:#06x}'

f'{{{4*10}}}'

fr'x={4*10}\n'

f'''{x
+1}'''

f'mapping is { {a:b for (a, b) in ((1, 2), (3, 4))} }'

f'{(lambda x: x*2)(3)}'

----------------------------------------------------

[
	["string-interpolation", [
		["string", "f'The value is "],
		["interpolation", [
			["punctuation", "{"],
			"value",
			["punctuation", "}"]
		]],
		["string", ".'"]
	]],

	["string-interpolation", [
		["string", "f\"The value is "],
		["interpolation", [
			["punctuation", "{"],
			["string", "'4'"],
			["punctuation", "}"]
		]],
		["string", ".\""]
	]],

	["string-interpolation", [
		["string", "f'input="],
		["interpolation", [
			["punctuation", "{"],
			"value",
			["conversion-option", "!s"],
			["punctuation", ":"],
			["format-spec", "#06x"],
			["punctuation", "}"]
		]],
		["string", "'"]
	]],

	["string-interpolation", [
		["string", "f'{{"],
		["interpolation", [
			["punctuation", "{"],
			["number", "4"],
			["operator", "*"],
			["number", "10"],
			["punctuation", "}"]
		]],
		["string", "}}'"]
	]],

	["string-interpolation", [
		["string", "fr'x="],
		["interpolation", [
			["punctuation", "{"],
			["number", "4"],
			["operator", "*"],
			["number", "10"],
			["punctuation", "}"]
		]],
		["string", "\\n'"]
	]],

	["string-interpolation", [
		["string", "f'''"],
		["interpolation", [
			["punctuation", "{"],
			"x\r\n",
			["operator", "+"],
			["number", "1"],
			["punctuation", "}"]
		]],
		["string", "'''"]
	]],

	["string-interpolation", [
		["string", "f'mapping is "],
		["interpolation", [
			["punctuation", "{"],
			["punctuation", "{"],
			"a",
			["punctuation", ":"],
			"b ",
			["keyword", "for"],
			["punctuation", "("],
			"a",
			["punctuation", ","],
			" b",
			["punctuation", ")"],
			["keyword", "in"],
			["punctuation", "("],
			["punctuation", "("],
			["number", "1"],
			["punctuation", ","],
			["number", "2"],
			["punctuation", ")"],
			["punctuation", ","],
			["punctuation", "("],
			["number", "3"],
			["punctuation", ","],
			["number", "4"],
			["punctuation", ")"],
			["punctuation", ")"],
			["punctuation", "}"],
			["punctuation", "}"]
		]],
		["string", "'"]
	]],

	["string-interpolation", [
		["string", "f'"],
		["interpolation", [
			["punctuation", "{"],
			["punctuation", "("],
			["keyword", "lambda"],
			" x",
			["punctuation", ":"],
			" x",
			["operator", "*"],
			["number", "2"],
			["punctuation", ")"],
			["punctuation", "("],
			["number", "3"],
			["punctuation", ")"],
			["punctuation", "}"]
		]],
		["string", "'"]
	]]
]

----------------------------------------------------

Checks for string interpolation.