PancakeSwap V2/V3合约的Python Defi操作开源库

由于PancakeSwap没有Python的SDK，所以使用Python写了一个开源库，新手编写，有问题请指出，以下为文档：

一个基于web3.py和Asyncio以及PancakeSwap V2/V3合约的Python库，包含创建池子、添加流动性、撤销流动性、查看流动性、Swap交易、WBNB/BNB转换等功能，V2/V3采用尽可能一致的语法，方便新手便捷的在BSC网络上进行DeFi操作。

⚡ 快速入门

安装

pip install pancakeswap-py

uv add pancakeswap-py

V3 示例

前置

💡 推荐使用私人或隐私的RPC节点,以防被夹子攻击

from pancakeswap_py.v3 import PancakeSwapV3, Fee
pancakeswap_v3 = PancakeSwapV3(
    json_rpc=JSON_RPC,
    private_key=PRIVATE_KEY,
)
WBNB = "0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c"
# 💡 测试使用的Token，无任何价值
TOKEN = "0x7e216C64f5954758d747e61C3b58062509eE40B8"
amountA = 0.001
amountB = 100

💡 所有带有auto前缀的方法都为本人封装，方便新手使用\ 💡 所有滑点slippage默认为0.05 💡 V2/V3类中都还有WBNB/BNB转换方法：wrap_bnb/unwrap_wbnb

创建池子

sqrt_price_x96 = await pancakeswap_v3.calculate_sqrt_price_x96(
    tokenA=WBNB,
    tokenB=TOKEN,
    amountA=amountA,
    amountB=amountB,
)
tx_hash = await pancakeswap_v3.auto_create_pool(
    tokenA=WBNB,
    tokenB=TOKEN,
    sqrt_price_x96=sqrt_price_x96,
    fee=Fee.NORMAL,
)
#sqrt_price_x96:250541448375047936131727360
#tx_hash:24bed0415fd2d83f53f682f1d8a5780c973662827f29af9115146a3afc832bfe

创建流动性

tx_hash = await pancakeswap_v3.auto_create_liquidity(
    tokenA=WBNB,
    tokenB=TOKEN,
    amountA=amountA,
    amountB=amountB,
)
#tx_hash:b8ccee2cfc258979f93d6fcae672692b2ceaad9b7e35d981a26e7cc9ec2feed1

获取地址的所有tokenID

all_tokenID = await pancakeswap_v3.get_all_tokenID()
#all_tokenID:[2823169]

添加流动性

tx_hash = await pancakeswap_v3.auto_increase_liquidity(
    tokenA=WBNB,
    tokenB=TOKEN,
    amountA=amountA,
    amountB=amountB,
    token_id=token_id,
)
#tx_hash:36ff8bda68c9e959e49f3ef798cea4c6996c12bd0197de6bf26f54b16a14fe7f

Swap交易

tx_hash = await pancakeswap_v3.auto_swap(
        tokenIn=WBNB,
        tokenOut=TOKEN,
        amountIn=0.0001,
        fee=Fee.NORMAL,
    )
#tx_hash:2abc0a2e19d8792b852c11aebdce185dba0348b8018f397c9acf937c64cca70e

查看流动性

pool_liquidity = await pancakeswap_v3.get_pool_liquidity(
    tokenA=WBNB,
    tokenB=TOKEN,
    fee=Fee.NORMAL,
)
#pool_liquidity:62026147965412118004

查看position

position_info = await pancakeswap_v3.get_position_info(
    token_id = token_id,
)
#position_info:[0, '0x0000000000000000000000000000000000000000', '0x7e216C64f5954758d747e61C3b58062509eE40B8', '0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c', 500, -115340, -114940, 62026147965412118004, 0, 0, 0, 0]

减去流动性

tx_hash = await pancakeswap_v3.auto_decrease_liquidity(
    token_id=token_id,
    liquidity_percentage=1,  # 1表示全部减去
)
#tx_hash:5c59426baf1662824c33208d13ca9459da445458e02414e33657a4ab95c48f4f

提取

tx_hash = await pancakeswap_v3.auto_collect_fees(
    token_id = 2823169,
)
#tx_hash:c396af7ec749edf88a02cfb2af230978053061e28642f0728b08066971011448

销毁

tx_hash = await pancakeswap_v3.auto_burn_position(
    token_id=2823169,
)
#tx_hash:f1746719e0ee85d0bcab108bef8353b1df12060840df022a7815d904d48fcef8

链上截图

V2 示例

前置

from pancakeswap_py.v2 import PancakeSwapV2

JSON_RPC = os.getenv("JSON_RPC")
PRIVATE_KEY = os.getenv("PRIVATE_KEY")

pancakeswap_v2 = PancakeSwapV2(
    json_rpc=JSON_RPC,
    private_key=PRIVATE_KEY,
)

WBNB = "0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c"
# 💡 测试Token 无任何价值！
TOKEN = "0xDD6A7a67466e4c207188Ad3A1E7D0E667C9F00B1"
amountA = 0.001
amountB = 100

创建池子

tx_hash = await pancakeswap_v2.auto_create_pair(
    tokenA=WBNB,
    tokenB=TOKEN,
)
#tx_hash:dfc36bab549723f9cb90203d52b0450c7c830765328af1f062c067ebe67ae2d5

创建流动性

tx_hash = await pancakeswap_v2.auto_create_liquidity(
    tokenA=WBNB,
    tokenB=TOKEN,
    amountA=amountA,
    amountB=amountB,
)
#tx_hash:0b256eef837c8801fc7243a2158a7100239fddb7290ea305642a6ed2469c4138

添加流动性

tx_hash = await pancakeswap_v2.auto_increase_liquidity(
    tokenA=WBNB,
    tokenB=TOKEN,
    amountA=amountA,
    amountB=amountB,
)
#tx_hash:cab6bb030664588bfb1ad51e688c4c05a12fa72ba09464475ece94f7e3996d9b

获取池地址

pair_address = await pancakeswap_v2.get_pair(
    tokenA=WBNB,
    tokenB=TOKEN,
)
#pair_address:0x002693E9eb3B6787034a8C09acB7cb90AFba1C5F

获取代币储备

reserves = await pancakeswap_v2.get_reserves(
    tokenA=WBNB,
    tokenB=TOKEN,
)
#reserves:(2000000000000000, 200000000000000000000, 1751778446)

Swap交易

tx_hash = await pancakeswap_v2.auto_swap(
    tokenIn=TOKEN,
    tokenOut=WBNB,
    amountIn=10,
)
#tx_hash:a3a0f07b5535d32d876eb2d5716be0aa9835f49e78a9added254246f3d2c48ec

减少流动性

tx_hash = await pancakeswap_v2.auto_decrease_liquidity(
    tokenA=TOKEN,
    tokenB=WBNB,
    liquidity_percentage=1,  # 1表示全部减去
)
#tx_hash:d38f04a4d87d7ffe2d3b2f24be9011bc1c2394083e5c65a6ce042273537ccfcd

链上截图