Aws lambda python function output remains hello from lambda even after changin

The problem is that the output of an AWS Lambda Python function remains “hello from lambda” even after making changes to the code. This can be frustrating as it prevents the updated code from being reflected in the function’s output. However, there are several ways to solve this issue.

Solution 1: Redeploy the Lambda Function

The first solution is to redeploy the Lambda function. This involves updating the function’s code and then redeploying it to AWS Lambda. Here’s how you can do it:


# Your updated Python code here
def lambda_handler(event, context):
    # Your updated logic here
    return "hello from lambda"

After making the necessary changes to the code, follow these steps to redeploy the Lambda function:

  1. Go to the AWS Management Console and navigate to the Lambda service.
  2. Select the Lambda function that needs to be updated.
  3. Click on the “Actions” dropdown and choose “Upload a .zip file” or “Edit code inline” depending on your preferred method of updating the code.
  4. Upload the updated code or make the necessary changes inline.
  5. Save the changes and test the function to ensure that the output reflects the updated code.

Solution 2: Clear the Function’s Cache

Another solution is to clear the function’s cache. AWS Lambda caches the function’s code and environment variables to improve performance. However, this caching can sometimes cause the function to continue using the old code even after it has been updated. To clear the cache, follow these steps:


# Your updated Python code here
def lambda_handler(event, context):
    # Your updated logic here
    return "hello from lambda"

After updating the code, clear the function’s cache by following these steps:

  1. Go to the AWS Management Console and navigate to the Lambda service.
  2. Select the Lambda function that needs to have its cache cleared.
  3. Click on the “Configuration” tab.
  4. Scroll down to the “General configuration” section and click on “Edit”.
  5. Scroll down to the “Environment variables” section and click on “Edit”.
  6. Make a small change to one of the environment variables (e.g., add a space at the end of a value).
  7. Save the changes.
  8. Test the function to ensure that the output reflects the updated code.

Solution 3: Create a New Lambda Function

If the above solutions do not work, you can create a new Lambda function with the updated code. This involves creating a new function from scratch and configuring it with the desired settings. Here’s how you can do it:


# Your updated Python code here
def lambda_handler(event, context):
    # Your updated logic here
    return "hello from lambda"

After updating the code, follow these steps to create a new Lambda function:

  1. Go to the AWS Management Console and navigate to the Lambda service.
  2. Click on the “Create function” button.
  3. Choose the appropriate options for the function (e.g., runtime, permissions, etc.).
  4. Enter a name for the function and select the desired trigger (e.g., API Gateway, S3, etc.).
  5. Click on “Create function”.
  6. Upload the updated code or make the necessary changes inline.
  7. Save the changes and test the function to ensure that the output reflects the updated code.

After considering these three solutions, the best option depends on the specific situation. If the function is already in use and has associated resources, redeploying the function (Solution 1) may be the most appropriate choice. However, if the function’s cache is causing the issue, clearing the cache (Solution 2) can be a quick fix. If all else fails, creating a new function (Solution 3) ensures a fresh start with the updated code.

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8 Responses

  1. OMG, this is such a weird bug! Cant believe the output still says hello from lambda even after making changes. 😱

    1. I totally agree! Its mind-boggling how something seemingly simple can turn into a complex puzzle. But hey, challenges keep life interesting, right? Lets embrace the weirdness and dive into the world of changing outputs. Cheers!

  2. Wow, this Lambda function issue seems like a real headache! Personally, Id go with Solution 2 – clearing the cache sounds like the easiest fix. 💡

    1. Actually, Solution 2 might not be as effective as you think. Clearing the cache can sometimes lead to temporary fixes, but it doesnt address the root cause of the problem. Its better to find a more permanent solution instead of relying on quick fixes.

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