problem with python binance api order_market_buy and order_market_sell

user_18558283 0
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I am trying to use order_market_buy and order_market_sell to buy/sell, taking BTCUSDT for example, when buying, I want to use all my usdt, when selling, I want to sell all the BTC.

I use

order_buy = Client.order_market_buy(symbol='BTCUSDT', quoteOrderQty=my_USDT_position)
order_sell = Client.order_market_sell(symbol='BTCUSDT', quoteOrderQty=my_BTC_position)

it's not working and pop"missing 1 required positional argument: 'self'"

Please help me with the problem, thanks!

binance api python
3 Answers

You can get you current balance of a specific asset then passes it as a parameter in the order_market_buy method.

Example:

usdtBalance = client.get_asset_balance(asset='USDT').get('free')
btcBalance = client.get_asset_balance(asset='BTC').get('free')

order_buy = Client.order_market_buy(symbol='BTCUSDT', quantity=usdtBalance)

order_sell = Client.order_market_sell(symbol='BTCUSDT', quantity=btcBalance)
user_93746700

From their documentation: https://python-binance.readthedocs.io/en/latest/binance.html?highlight=order_market_buy#binance.client.Client.order_market_buy

It seems that you did not input a quantity argument in the function call of order_market_buy and order_market_sell, that is why you are getting an error. quantity and symbol are a required parameter of these functions.

So I think to solve the "missing 1 required positional argument: 'self'" error you should do:

order_buy = Client.order_market_buy(symbol='BTCUSDT', quantity=<your quantity>, quoteOrderQty=my_USDT_position)
order_sell = Client.order_market_sell(symbol='BTCUSDT', quantity=<your quantity>, quoteOrderQty=my_BTC_position)
user_184319590

Did you also try something like this?

usdtBalance = Client.get_asset_balance(asset='USDT').get('free') 

#use param quoteOrderQty instead of param quantity when buying
order_buy = Client.order_market_buy(symbol='BTCUSDT', quoteOrderQty=usdtBalance)

##Some time later##

btcBalance = Client.get_asset_balance(asset='BTC').get('free')

#use param quantity instead of param quoteOrderQty when selling
order_sell = Client.order_market_sell(symbol='BTCUSDT', quantity=btcBalance)

Based on your comment, it seems that Client.order_market_buy(symbol='BTCUSDT', quoteOrderQty=usdtBalance) worked for buying, but Client.order_market_sell(symbol='BTCUSDT', quantity=btcBalance) did NOT for selling.

I tend to think it's because the information you stored in btcBalance was prior to the purchase you made right after initializing btcBalance, it would make sense since that way you would have stored 0.00 or just "Dust" which is a very low amount of the base asset that can't be used for trading on Binance but instead for just converting to BNB.

In this guide, there's an example using the Testnet Binance Vision, although it illustrates very well how to set a Market Sell Order with Python Binance package:

from binance.exceptions import BinanceAPIException

api_key = '<testnet api_key>'
api_secret = '<testnet api_secret>'

async def main():

    quantity = '0.000001'
    client = await AsyncClient.create(api_key=api_key, api_secret=api_secret, testnet=True)

    try:
        market_res = await client.order_market_sell(symbol='BTCUSDT', quantity=quantity)
    except BinanceAPIException as e:
        print(e)
    else:
        print(json.dumps(market_res, indent=2))

    await client.close_connection()

It even says that if the value stored in quantity is not greater than the MIN_NOTIONAL value, you will get the following error:

APIError(code=-1013): Filter failure: MIN_NOTIONAL

I recommend you to check it out, it may help you better when dealing with this topic.

user_164671540
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