金额合计

# 费用明细的金额
exps = context['input_data']['exps']
# 金额求和
num_sum = 0
for d in exps:
    num_sum += float(d['金额（元）'])

output={'num_sum':num_sum}

number = context['input_data']['number']
sum_num = sum([float(n) for n in number])
output={'sum_num':'{:.2f}'.format(sum_num)}