问题描述
我目前能够使用python-binance v0.7.5中的以下代码成功查询我的保证金帐户:
client.get_margin_account()
它将返回以下保证金余额列表和信息列表,该列表列出了交易所中从最高余额到最低余额的所有交易品种:
{'TradeEnabled': True,'transferEnabled': True,'borrowEnabled': True,'marginLevel': '999.00000000','totalAssetofBtc': '0.00000000','totalLiabilityOfBtc': '0.00000000','totalNetAssetofBtc': '0.00000000','userAssets': [{'asset': 'BTC','free': '0.00000000','locked': '0.00000000','borrowed': '0.00000000','interest': '0.00000000','netAsset': '0.00000000'},{'asset': 'ETH','netAsset': '0.00000000'}]}
我可以按以下方式查询特定资产:
client.get_margin_account()['userAssets'][0]['free']
但是当我使用此代码时:
client.get_margin_account()['userAssets']['btc']['free']
我收到此错误:
TypeError: list indices must be integers or slices,not str
如何在不指定索引位置的情况下查询帐户中的特定符号?
解决方法
选项1:使用next()
:
data = {'tradeEnabled': True,'transferEnabled': True,'borrowEnabled': True,'marginLevel': '999.00000000','totalAssetOfBtc': '0.00000000','totalLiabilityOfBtc': '0.00000000','totalNetAssetOfBtc': '0.00000000','userAssets': [{'asset': 'BTC','free': '0.00000000','locked': '0.00000000','borrowed': '0.00000000','interest': '0.00000000','netAsset': '0.00000000'},{'asset': 'ETH','netAsset': '0.00000000'}]}
print( next(d for d in data['userAssets'] if d['asset'] == 'BTC')['free'] )
选项2:将userAssets转换为字典:
ua = {d['asset']: d for d in data['userAssets']}
print(ua['BTC']['free'])