CODEWITHSUNDEEP
pythonamazon-web-servicesaws-lambdatypeerror
user3646519
user3646519

Reputation: 363

AWS lambda: Python Type error concat str to bytes

I have the code below in a AWS lambda function which makes a REST post request. The code worked in 2.7, but is throwing an error in 3.7.

The error is in the header portion of the request. But I'm not clear on how to fix it.

The code snippet is listed below:

    DOMAIN = 'xxx-yyy.com'
    TOKEN = 'xdfbvgsded5e9fb99a'
    JOB = 1
    build_url = f'https://{DOMAIN}/api/2.0/jobs/run-now'
    response = requests.post(build_url,headers={'Authorization': b"Basic " + base64.standard_b64encode(b"token:" + TOKEN)}, json={"job_id": JOB})
    # response = requests.get("http://www.google.com")
    if response.status_code == 200:
        print("Request Submitted")
    else:
        print("Error launching cluster")```

Error message

```{
  "errorMessage": "can't concat str to bytes",
  "errorType": "TypeError",
  "stackTrace": [
    "  File \"/var/task/lambda_function.py\", line 11, in lambda_handler\n    headers = {'Authorization': b\"Basic \" + base64.standard_b64encode(b\"token:\" + TOKEN)}\n"```

  ]
} ```

Upvotes: 0

Views: 799

Answers (1)

Franco Morero
Franco Morero

Reputation: 559

You are trying to concat an str (TOKEN) to a bytes var.

To fix make TOKEN a bytes variable:

TOKEN = b'xdfbvgsded5e9fb99a'
authorization = b"Basic " + base64.standard_b64encode(b"token:" + TOKEN)

I think the Authorization header needs an str, but because you have a bytes, here are the two options.

as bytes:

headers={'Authorization': authorization}

as str:

headers={'Authorization': authorization.decode("utf-8")}

Upvotes: 1

Related Questions