AWS Lambda 上的 Python 函数

Question

我需要在 lambda AWS 上运行以下函数：

def subset_sum(numbers, target, partial=[]):
    s = sum(partial)

# check if the partial sum is equals to target
if s == target:
    print("sum(%s)=%s" % (partial, target))
if s >= target:
    return  # if we reach the number why bother to continue

for i in range(len(numbers)):
    n = numbers[i]
    remaining = numbers[i + 1:]
    subset_sum(remaining, target, partial + [n])

if __name__ == "__main__":
    subset_sum([1,2,3], 5)

但是出现以下错误，我无法解决：

{
  "errorMessage": "'>=' not supported between instances of 'int' and 'LambdaContext'",
  "errorType": "TypeError",
  "stackTrace": [
    [
      "/var/task/lambda_function.py",
      7,
      "subset_sum",
      "if s >= target:"
    ]
  ]
}

原来的函数有更多的值需要很长时间，因为我在 Lambda 上运行。

在使用 py subset_sum.py 的电脑上运行正常。

Answer 1

处理函数有 2 个参数事件和上下文

def handler_name(event, context): 
...
         return some_value

http://docs.aws.amazon.com/lambda/latest/dg/python-programming-model-handler-types.html