我在尝试保存/测试此 Lambda Boto3 函数时遇到一个非常烦人的错误。关于这个问题还有其他线程，但我花了大约 2 个小时尝试调试它，但无法弄清楚我做错了什么(这可能是显而易见的(。任何帮助将不胜感激！
{
"errorMessage": "Parser must be a string or character stream, not datetime",
"errorType": "TypeError",
"stackTrace": [
" File "/var/task/lambda_function.py", line 35, in lambda_handlern a = dateutil.parser.parse(instance.launch_time)n",
" File "/var/runtime/dateutil/parser/_parser.py", line 1358, in parsen return DEFAULTPARSER.parse(timestr, **kwargs)n",
" File "/var/runtime/dateutil/parser/_parser.py", line 646, in parsen res, skipped_tokens = self._parse(timestr, **kwargs)n",
" File "/var/runtime/dateutil/parser/_parser.py", line 722, in _parsen l = _timelex.split(timestr) # Splits the timestr into tokensn",
" File "/var/runtime/dateutil/parser/_parser.py", line 207, in splitn return list(cls(s))n",
" File "/var/runtime/dateutil/parser/_parser.py", line 76, in __init__n '{itype}'.format(itype=instream.__class__.__name__))n"
]
}
import json
import boto3
import time
import datetime
import dateutil
from dateutil.parser import parse
def lambda_handler(event, context):
detailDict = event["detail"]
ec2 = boto3.resource('ec2')
instanceId = str(detailDict["instance-id"])
instance = ec2.Instance(instanceId)
instanceState = instance.state
a = dateutil.parser.parse(instance.launch_time)
b = current_time = datetime.datetime.now(launch_time.tzinfo)
# returns a timedelta object
c = a-b
print('Difference: ', c)
minutes = c.seconds / 60
print('Difference in minutes: ', minutes)
Message=str(instanceId)+" is "+str(instanceState["Name"])
return {
'statusCode': 200,
'body': Message
}
launch-time属性已经是一个日期时间属性。您不需要解析它。
参考： https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/ec2.html