dhSSKrSSKrSSKrSSKJr SSKJrJr SSKrSSK J r SSK J r "SS\5r "SS \ 5rg) N)Enum)ListOptional)Document) BaseLoadercd\rSrSrSrSrSrSrSrSr Sr S r S r S r S rS rSrSrSrSrSrSrSrSrSrg)BlockchainType z(Enumerator of the supported blockchains.z eth-mainnetz eth-goerliz eth-sepoliaz eth-holeskyzpolygon-mainnetzpolygon-mumbaiz polygon-amoyz arb-mainnetz arb-sepoliaz opt-mainnetz opt-sepoliaz base-mainnetz base-sepoliaz blast-mainnetz blast-sepoliazzksync-mainnetzzksync-sepoliaz zora-mainnetz zora-sepoliaN)__name__ __module__ __qualname____firstlineno____doc__ ETH_MAINNET ETH_GOERLI ETH_SEPOLIA ETH_HOLESKYPOLYGON_MAINNETPOLYGON_MUMBAI POLYGON_AMOY ARB_MAINNET ARB_SEPOLIA OP_MAINNET OP_SEPOLIA BASE_MAINNET BASE_SEPOLIA BLAST_MAINNET BLAST_SEPOLIAZKSYNC_MAINNETZKSYNC_SEPOLIA ZORA_MAINNET ZORA_SEPOLIA__static_attributes__r g/var/www/html/shao/venv/lib/python3.13/site-packages/langchain_community/document_loaders/blockchain.pyr r sd2KJKK'O%N!LKKJJ!L!L#M#M%N%N!L!Lr%r c\rSrSrSr\R SSSS4S\S\S \S \S \S \ \ 4 S jjr S\ \ 4SjrS\S\4Sjr\S\S\4Sj5rSrg)BlockchainDocumentLoader%aLoad elements from a blockchain smart contract. See supported blockchains here: https://python.langchain.com/v0.2/api_reference/community/document_loaders/langchain_community.document_loaders.blockchain.BlockchainType.html If no BlockchainType is specified, the default is Ethereum mainnet. The Loader uses the Alchemy API to interact with the blockchain. ALCHEMY_API_KEY environment variable must be set to use this loader. The API returns 100 NFTs per request and can be paginated using the startToken parameter. If get_all_tokens is set to True, the loader will get all tokens on the contract. Note that for contracts with a large number of tokens, this may take a long time (e.g. 10k tokens is 100 requests). Default value is false for this reason. The max_execution_time (sec) can be set to limit the execution time of the loader. Future versions of this loader can: - Support additional Alchemy APIs (e.g. getTransactions, etc.) - Support additional blockchain APIs (e.g. Infura, Opensea, etc.) z docs-demoFNcontract_addressblockchainTypeapi_key startTokenget_all_tokensmax_execution_timecdXlURUl[RR S5=(d UUlX@lXPlX`l UR (d [S5e[R"SUR5(d[SUR35eg)a5 Args: contract_address: The address of the smart contract. blockchainType: The blockchain type. api_key: The Alchemy API key. startToken: The start token for pagination. get_all_tokens: Whether to get all tokens on the contract. max_execution_time: The maximum execution time (sec). ALCHEMY_API_KEYzAlchemy API key not provided.z^0x[a-fA-F0-9]{40}$zInvalid contract address N) r+valuer,osenvirongetr-r.r/r0 ValueErrorrematch)selfr+r,r-r.r/r0s r&__init__!BlockchainDocumentLoader.__init__?s&!1,22zz~~&78CG $,"4||<= =xx.0E0EFF89N9N8OPQ QGr%returnc/nURn[R"5nSURSURSURSU3n[ R "U5nURS:wa[SUR35eUR5SnU(dOUHHn[U5nUSS n URURU S .n UR[XS 95 MJ UR(dObURUS RS 5nUR b1[R"5U- UR :a [#S 5eGMGU(d[SUR35eU$)Nzhttps://z.g.alchemy.com/nft/v2/z8/getNFTsForCollection?withMetadata=True&contractAddress=z &startToken=z Request failed with status code nftsidtokenId)source blockchainrB) page_contentmetadataz/Execution time exceeded the allowed time limit.z#No NFTs found for contract address )r.timer,r-r+requestsr6 status_coder7jsonstrappendrr/_get_next_tokenIdrFr0 RuntimeError) r:resultcurrent_start_token start_timeurlresponseitemsitemcontentrBrFs r&loadBlockchainDocumentLoader.load_s"ooYY[ 4..//E<<.!((,(=(='>235  ||C(H##s* 6x7K7K6LMMMOF+Ed)t*Y/"33"&"5"5&  hGOP&&#'"8"89L9LY9W"X ''3YY[:-1H1HH"#TUUSV5d6K6K5LM  r%rBc lURU5nUS:Xa [US5nO!US:Xa[USSS5nO [U5nUS-nUS:Xa*S[US[[ U5S- 5-S-5-$US:Xa*S [US[[ U5S - 5-S-5-$[U5$) Nhex_0xhex_0xbf0x0x0xbf)_detect_value_typeintformatrLlen)r:rB value_type value_intrPs r&rN*BlockchainDocumentLoader._get_next_tokenIds,,W5  !GR(I : %GABK,IG IQ  !&s3wrvs7 !-@"T"0QzQr%