從 api，我在一枚硬幣上獲得了多條記錄。如何正確總結并將它們添加到 Wallet.objects() ？現在我有這樣一個代碼，它只是用硬幣零覆蓋舊值。示例我有回應{"coin":"BIP","value":"5"}{"coin":"ZERO","value":"4"}{"coin":"BIP","value":"15"}{"coin":"INSIDER","value":"24"}{"coin":"BIP","value":"41"}我想從這個響應中添加數據庫："coin":"BIP","value":"61""coin":"ZERO","value":"4""coin":"INSIDER","value":"24"它的總和是所有 BIP (5+15+41)。和其他硬幣。如何？我的 Wallet.objects 現在不能合計這個金額obj, created = Wallet.objects.update_or_create(user=user, coin_id_id=coin.id, defaults={'amount_d': amount_d, 'amount_w': 0, 'cap_w': 0, 'cap_d': capitalize_d},) obj.save()請幫忙。太棒了！
1 回答
慕絲7291255
TA貢獻1859條經驗 獲得超6個贊
coins = [
{'coin': "A", 'value': 2},
{'coin': "B", 'value': 5},
{'coin': "A", 'value': 1},
{'coin': "A", 'value': 3},
]
new = {}
for c in coins:
coin_name = c.get("coin")
coin_value = c.get("value", 0)
new[coin_name] = new.get(coin_name, 0) + coin_value
coin = []
for key in new:
coin.append({'coin': key, 'value': new[key]})
print(coin)
結果：
[{'coin': 'A', 'value': 6}, {'coin': 'B', 'value': 5}]
編輯：（添加了bip_value）
coins = [
{'coin': "A", 'value': 2, 'bip_value': 1},
{'coin': "B", 'value': 5, 'bip_value': 2},
{'coin': "A", 'value': 1, 'bip_value': 3},
{'coin': "A", 'value': 3, 'bip_value': 4},
]
new = {
'coin': {},
'bip': {}
}
for c in coins:
coin_name = c.get("coin")
coin_value = c.get("value", 0)
bip_value = c.get("bip_value", 0)
new['coin'][coin_name] = new['coin'].get(coin_name, 0) + coin_value
new['bip'][coin_name] = new['bip'].get(coin_name, 0) + bip_value
coin = []
for key in new['coin']:
coin.append({'coin': key, 'value': new['coin'][key], 'bip_value': new['bip'][key]})
print(coin)
結果：
[{'coin': 'A', 'value': 6, 'bip_value': 8}, {'coin': 'B', 'value': 5, 'bip_value': 2}]
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