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# python

sparse-intern-71089

11/01/2022, 1:58 AM

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miniature-musician-31262

11/01/2022, 4:23 AM

Hi there — have a look at this example. It looks similar to your code, so might help: https://github.com/pulumi/examples/blob/258d3bad0a00020704743e37911c51be63c06bb4/aws-py-serverless-raw/__main__.py#L73-L89

miniature-musician-31262

11/01/2022, 4:36 AM

This, for example, seems to work for me:

Copy code

some_dict = {
  "THING": "one",
  "OTHER_THING": 2,
}

fn = aws.lambda_.Function("fn",
    runtime="python3.9",
    handler="handler.handler",
    role=role.arn,
    code=pulumi.FileArchive("./function"),
    environment=aws.lambda_.FunctionEnvironmentArgs(
        variables=some_dict,
    ))

miniature-musician-31262

11/01/2022, 4:37 AM

When deployed, I see the environment variables:

orange-airport-64592

11/01/2022, 5:54 AM

Hi, @miniature-musician-31262 Thank you for your reply, I can understand this code why not warring. https://github.com/pulumi/examples/blob/258d3bad0a00020704743e37911c51be63c06bb4/aws-py-serverless-raw/__main__.py#L73-L89. But for your code.

Copy code

some_dict = {
  "THING": "one",
  "OTHER_THING": 2,
}

fn = aws.lambda_.Function("fn",
    runtime="python3.9",
    handler="handler.handler",
    role=role.arn,
    code=pulumi.FileArchive("./function"),
    environment=aws.lambda_.FunctionEnvironmentArgs(
        variables=some_dict,
    ))

I can not understand, It looks like my codes, but it works! Just eluded pylance’s inspection?

orange-airport-64592

11/01/2022, 6:01 AM

so, There is no way to convert str to pulumi.Input[str] ?

miniature-musician-31262

11/01/2022, 3:15 PM

In general you shouldn’t have to manually cast anything from a string to an input of string, as plain strings are also valid inputs. Where are your

s3_zip_log_bucket_name

and

db_password

values coming from, though? Are they plain strings, or outputs of some other resource?

fierce-ability-58936

11/01/2022, 9:34 PM

The warning is easy to fix: make sure the values are strings

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...
                "RDS_PORT": "3306",
                "TTL": "172800",
...

these will be env vars anyway, so they will be strings.

fierce-ability-58936

11/01/2022, 9:38 PM

However, it's weird that if you do this

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variables = {
      "DESTN_BUCKET": "blah",                
      "RDS_HOSTNAME": "<http://xxxx.ap-east-1.rds.amazonaws.com|xxxx.ap-east-1.rds.amazonaws.com>",
      "RDS_USERNAME": "admin",
      "RDS_PASSWORD": "blah",
      "RDS_PORT": "3306",
      "TTL": 172800,
}

then it works. It seems, the variables type is inferred as

dict[str, Unknown]

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variables = {                                                                
    "DES (variable) variables: dict[str, Unknown]

but if you define the type properly, then it becomes an error:

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variables: dict[str, str] = { 
      "DESTN_BUCKET": "blah",
      "RDS_HOSTNAME": "<http://xxxx.ap-east-1.rds.amazonaws.com|xxxx.ap-east-1.rds.amazonaws.com>",
      "RDS_USERNAME": "admin",
      "RDS_PASSWORD": "blah",
      "RDS_PORT": "3306",
E     "TTL": 172800,     ■ Expression of type "dict[str, str | int]" cannot be assigned to declared type "dict[str, str]"    "Literal[172800]" is incompatible with "str"
  }

Add quotes to TTL and it works 🙂

fierce-ability-58936

11/01/2022, 9:45 PM

I think of an

Input[str]

as either

str

Output[str]

In fact, in the SDK it's defined as a Union

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Input = Union[T, Awaitable[T], "Output[T]"]

orange-airport-64592

11/02/2022, 2:34 AM

@miniature-musician-31262 Thanks for reminding me! The

s3_zip_log_bucket_name

and

db_password

values are string too, I find the key is

Copy code

"TTL": 172800

When I remove this line, It is fine.

orange-airport-64592

11/02/2022, 2:43 AM

@fierce-ability-58936 Thank you for your reply, you are right！ I just realized how stupid my question is.

👍 1

fierce-ability-58936

11/02/2022, 7:59 PM

There are no stupid questions 🙂

☝️ 1

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