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from itertools import chain
from typing import Final
from moto.stepfunctions.parser.asl.component.component import Component
class Label(Component):
label: Final[str]
def __init__(self, label: str):
self.label = label.encode().decode("unicode-escape")
if len(self.label) == 0:
raise ValueError("Label cannot be empty")
if len(self.label) > 40:
raise ValueError("Label cannot exceed 40 characters")
for invalid_char in list(' ?*<>{}[]:;,\\|^~$#%&`"') + [
chr(i) for i in chain(range(0x00, 0x20), range(0x7F, 0xA0))
]:
if invalid_char in self.label:
escaped_char = invalid_char.encode("unicode-escape").decode()
raise ValueError(f"Label contains invalid character: '{escaped_char}'")
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