Question

所以我要添加和更新python字典。目前它看起来很难看，难以阅读，是否有更好的方法做同样的事情？

        if not transaction_id in self.transaction_log:
            self.transaction_log[transaction_id] = {
                'gross_total': 0,
                'net_total': 0,
                'qty_total': 0,
                'tax_total': 0
            }
            self.transaction_log[transaction_id]['products'] = {}


        # create a list of dics to be reused in
        # other class methods
        self.transaction_log[transaction_id].update({
            'transaction_id': transaction_id,
            'transaction_time': transaction_datetime,
            'location_id': location_id,
            'till_id': till_id,
            'employee_id': employee_id,

        })

        self.transaction_log[transaction_id]['products'][product_id] = {
            'gross': gross,
            'net': net,
            'tax': tax,
            'qty': qty
        }

        self.transaction_log[transaction_id]['gross_total'] += gross
        self.transaction_log[transaction_id]['net_total'] += net
        self.transaction_log[transaction_id]['qty_total'] += tax
        self.transaction_log[transaction_id]['tax_total'] += qty

Answer 1

这可能更适合codereview.stackexchange.com ：

transaction = self.transaction_log.setdefault(transaction_id, { 'products': {} })

# create a list of dics to be reused in
# other class methods
transaction.update({
    'gross_total': transaction.get('gross_total', 0) + gross,
    'net_total': transaction.get('net_total', 0) + net,
    'qty_total': transaction.get('qty_total', 0) + qty,
    'tax_total': transaction.get('tax_total', 0) + tax,
    'transaction_id': transaction_id,
    'transaction_time': transaction_datetime,
    'location_id': location_id,
    'till_id': till_id,
    'employee_id': employee_id
})
transaction['products'].update({
    product_id: {
        'gross': gross,
        'net': net,
        'tax': tax,
        'qty': qty
    }
})

此外，您似乎已撤消qty和tax

更新python字典值

1 个答案: