公链是Web3.0的核心载体，支持互操作、赋权赋能和信用机制，以及各类应用，Web3.0公链赛道主要包括Layer1、Layer2、Layer0。
function tokenURI(uint256 tokenId)public view virtual override returns(string memory){
if(!_exists(tokenId))revert URIQueryForNonexistentToken();
//baseURI是目录的URI
string memory baseURI=_baseURI();
//将目录的URI和tokenId拼接在一起就是token的URI
return bytes(baseURI).length!=0?string(abi.encodePacked(baseURI,tokenId.toString())):'';
}
from web3 import Web3
import json
#https://etherscan.io/tx/0xbede5e44cc631303a22d066cc269f989469742b5bb6d9a74185e146dab9211e4
#https://mainnet.infura.io/v3/8a264f274fd94de48eb290d35db030ab
#contract address is 0x0632aDCab8F12edD3b06F99Dc6078FE1FEDD32B0
from web3 import Web3
my_provider=Web3.HTTPProvider('https://mainnet.infura.io/v3/8a264f274fd94de48eb290d35db030ab')
w3=Web3(my_provider)
def main():
contract_address='0x0632aDCab8F12edD3b06F99Dc6078FE1FEDD32B0'
contract_abi=json.load(open('surge.abi','r'))
#print(contract_abi)
mycontract=w3.eth.contract(address=contract_address,abi=contract_abi)
name=mycontract.functions.name().call()
print(name)
symbol=mycontract.functions.symbol().call()
print(symbol)
tokenURI=mycontract.functions.tokenURI(1802).call()
print(tokenURI)
pass
if __name__=='__main__':
main()
