使用python web3获取uniswapv2的价格 代码
时间: 2023-06-15 15:05:50 浏览: 59
以下是使用 Python 的 Web3 模块获取 UniswapV2 价格的示例代码:
```python
from web3 import Web3
# Connect to Ethereum network
w3 = Web3(Web3.HTTPProvider('https://mainnet.infura.io/v3/<YOUR_INFURA_PROJECT_ID>'))
# The UniswapV2Router02 contract address on Ethereum mainnet
uniswap_router_contract_address = '0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D'
# ABI for the UniswapV2Router02 contract
uniswap_router_abi = [
{
"inputs": [],
"name": "WETH",
"outputs": [
{
"internalType": "address",
"name": "",
"type": "address"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "tokenA",
"type": "address"
},
{
"internalType": "address",
"name": "tokenB",
"type": "address"
},
{
"internalType": "uint256",
"name": "amountADesired",
"type": "uint256"
},
{
"internalType": "uint256",
"name": "amountBDesired",
"type": "uint256"
},
{
"internalType": "uint256",
"name": "amountAMin",
"type": "uint256"
},
{
"internalType": "uint256",
"name": "amountBMin",
"type": "uint256"
},
{
"internalType": "address",
"name": "to",
"type": "address"
},
{
"internalType": "uint256",
"name": "deadline",
"type": "uint256"
}
],
"name": "swapExactTokensForTokens",
"outputs": [
{
"internalType": "uint256[]",
"name": "amounts",
"type": "uint256[]"
}
],
"stateMutability": "nonpayable",
"type": "function"
}
]
# Load the UniswapV2Router02 contract
uniswap_router = w3.eth.contract(address=uniswap_router_contract_address, abi=uniswap_router_abi)
# Get the address of the WETH token
weth_address = uniswap_router.functions.WETH().call()
# The UniswapV2Pair contract address for the token pair you want to get the price for
token_pair_address = '0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2'
# ABI for the UniswapV2Pair contract
uniswap_pair_abi = [
{
"inputs": [
{
"internalType": "address",
"name": "_token0",
"type": "address"
},
{
"internalType": "address",
"name": "_token1",
"type": "address"
}
],
"stateMutability": "nonpayable",
"type": "constructor"
},
{
"anonymous": False,
"inputs": [
{
"indexed": True,
"internalType": "address",
"name": "sender",
"type": "address"
},
{
"indexed": False,
"internalType": "uint256",
"name": "amount0",
"type": "uint256"
},
{
"indexed": False,
"internalType": "uint256",
"name": "amount1",
"type": "uint256"
},
{
"indexed": True,
"internalType": "address",
"name": "to",
"type": "address"
}
],
"name": "Mint",
"type": "event"
},
{
"anonymous": False,
"inputs": [
{
"indexed": True,
"internalType": "address",
"name": "sender",
"type": "address"
},
{
"indexed": False,
"internalType": "uint256",
"name": "amount0",
"type": "uint256"
},
{
"indexed": False,
"internalType": "uint256",
"name": "amount1",
"type": "uint256"
}
],
"name": "Swap",
"type": "event"
},
{
"anonymous": False,
"inputs": [
{
"indexed": True,
"internalType": "address",
"name": "sender",
"type": "address"
},
{
"indexed": False,
"internalType": "uint256",
"name": "amount0In",
"type": "uint256"
},
{
"indexed": False,
"internalType": "uint256",
"name": "amount1In",
"type": "uint256"
},
{
"indexed": False,
"internalType": "uint256",
"name": "amount0Out",
"type": "uint256"
},
{
"indexed": False,
"internalType": "uint256",
"name": "amount1Out",
"type": "uint256"
},
{
"indexed": True,
"internalType": "address",
"name": "to",
"type": "address"
}
],
"name": "Sync",
"type": "event"
},
{
"inputs": [],
"name": "getReserves",
"outputs": [
{
"internalType": "uint112",
"name": "_reserve0",
"type": "uint112"
},
{
"internalType": "uint112",
"name": "_reserve1",
"type": "uint112"
},
{
"internalType": "uint32",
"name": "_blockTimestampLast",
"type": "uint32"
}
],
"stateMutability": "view",
"type": "function"
}
]
# Load the UniswapV2Pair contract
uniswap_pair = w3.eth.contract(address=token_pair_address, abi=uniswap_pair_abi)
# Get the reserves of the token pair
(token0_reserve, token1_reserve, timestamp) = uniswap_pair.functions.getReserves().call()
# Get the decimals of the tokens
token0_decimals = w3.eth.contract(address=uniswap_pair.functions.token0().call(), abi=uniswap_pair_abi).functions.decimals().call()
token1_decimals = w3.eth.contract(address=uniswap_pair.functions.token1().call(), abi=uniswap_pair_abi).functions.decimals().call()
# Calculate the price of token1 in terms of token0
price = (token1_reserve * 10 ** token0_decimals) / (token0_reserve * 10 ** token1_decimals)
# Print the price
print(f'The price of token1 in terms of token0 is {price}')
```
请注意,你需要使用自己的 Infura 项目 ID 替换代码中的 `<YOUR_INFURA_PROJECT_ID>`,并且你需要使用正确的 UniswapV2Pair 地址和对应的 ABI。
相关推荐
![pdf](https://img-home.csdnimg.cn/images/20210720083512.png)
![pdf](https://img-home.csdnimg.cn/images/20210720083512.png)
![-](https://csdnimg.cn/download_wenku/file_type_column_c1.png)
![-](https://csdnimg.cn/download_wenku/file_type_column_c1.png)
![-](https://csdnimg.cn/download_wenku/file_type_column_c1.png)
![-](https://csdnimg.cn/download_wenku/file_type_column_c1.png)
![-](https://csdnimg.cn/download_wenku/file_type_column_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)