Bug: Error from cookiecutter: open() argument 6 must be str or None, not tuple

[abdulazeezoj]

Description:

When trying to create a SAM app template using sam init, it creates a folder with no content in it.

sam-app
├── events
├── hello_world
└── tests

3 directories, 0 files

When I ran sam init --debug it run an error

2022-07-14 02:53:58,674 | Baking a new template with cookiecutter with all parameters
2022-07-14 02:53:58,727 | Error from cookiecutter: open() argument 6 must be str or None, not tuple
2022-07-14 02:53:58,728 | Template is not provided in context, skip adding project type metric

Steps to reproduce:

$ sam init 

Which template source would you like to use?
        1 - AWS Quick Start Templates
        2 - Custom Template Location
Choice: 1

Choose an AWS Quick Start application template
        1 - Hello World Example
        2 - Multi-step workflow
        3 - Serverless API
        4 - Scheduled task
        5 - Standalone function
        6 - Data processing
        7 - Infrastructure event management
        8 - Machine Learning
Template: 1

Use the most popular runtime and package type? (Python and zip) [y/N]: N

Which runtime would you like to use?
        1 - dotnet6
        2 - dotnet5.0
        3 - dotnetcore3.1
        4 - go1.x
        5 - graalvm.java11 (provided.al2)
        6 - graalvm.java17 (provided.al2)
        7 - java11
        8 - java8.al2
        9 - java8
        10 - nodejs16.x
        11 - nodejs14.x
        12 - nodejs12.x
        13 - python3.9
        14 - python3.8
        15 - python3.7
        16 - python3.6
        17 - ruby2.7
        18 - rust (provided.al2)
Runtime: 14

What package type would you like to use?
        1 - Zip
        2 - Image
Package type: 2

Based on your selections, the only dependency manager available is pip.
We will proceed copying the template using pip.

Would you like to enable X-Ray tracing on the function(s) in your application?  [y/N]: N

Project name [sam-app]: sam-app

Observed result:

user/project $ sam init --debug
2022-07-14 02:52:34,113 | Telemetry endpoint configured to be https://aws-serverless-tools-telemetry.us-west-2.amazonaws.com/metrics
2022-07-14 02:52:34,113 | Using config file: samconfig.toml, config environment: default
2022-07-14 02:52:34,113 | Expand command line arguments to:
2022-07-14 02:52:34,114 | --package_type=Zip --output_dir=. 

You can preselect a particular runtime or package type when using the `sam init` experience.
Call `sam init --help` to learn more.

Which template source would you like to use?
        1 - AWS Quick Start Templates
        2 - Custom Template Location
Choice: 1

Choose an AWS Quick Start application template
        1 - Hello World Example
        2 - Multi-step workflow
        3 - Serverless API
        4 - Scheduled task
        5 - Standalone function
        6 - Data processing
        7 - Infrastructure event management
        8 - Machine Learning
Template: 1

Use the most popular runtime and package type? (Python and zip) [y/N]: N

Which runtime would you like to use?
        1 - dotnet6
        2 - dotnet5.0
        3 - dotnetcore3.1
        4 - go1.x
        5 - graalvm.java11 (provided.al2)
        6 - graalvm.java17 (provided.al2)
        7 - java11
        8 - java8.al2
        9 - java8
        10 - nodejs16.x
        11 - nodejs14.x
        12 - nodejs12.x
        13 - python3.9
        14 - python3.8
        15 - python3.7
        16 - python3.6
        17 - ruby2.7
        18 - rust (provided.al2)
Runtime: 14

What package type would you like to use?
        1 - Zip
        2 - Image
Package type: 2

Based on your selections, the only dependency manager available is pip.
We will proceed copying the template using pip.

Would you like to enable X-Ray tracing on the function(s) in your application?  [y/N]: 

Project name [sam-app]: 
2022-07-14 02:53:35,233 | 
Cloning from https://github.com/aws/aws-sam-cli-app-templates (process may take a moment)
2022-07-14 02:53:58,115 | Removing old repo at /home/user/.aws-sam/aws-sam-cli-app-templates
2022-07-14 02:53:58,225 | Copying from /tmp/tmpgbdazfe3/aws-sam-cli-app-templates to /home/user/.aws-sam/aws-sam-cli-app-templates

    -----------------------
    Generating application:
    -----------------------
    Name: sam-app
    Base Image: amazon/python3.8-base
    Architectures: x86_64
    Dependency Manager: pip
    Output Directory: .

    Next steps can be found in the README file at ./sam-app/README.md
    

    Commands you can use next
    =========================
    [*] Create pipeline: cd sam-app && sam pipeline init --bootstrap
    [*] Validate SAM template: sam validate
    [*] Test Function in the Cloud: sam sync --stack-name {stack-name} --watch
    
2022-07-14 02:53:58,674 | Parameters dict created with input given
2022-07-14 02:53:58,674 | {'template': '/home/user/.aws-sam/aws-sam-cli-app-templates/python3.8-image/cookiecutter-aws-sam-hello-python-lambda-image', 'output_dir': '.', 'no_input': True, 'extra_context': {'project_name': 'sam-app', 'runtime': 'python3.8', 'architectures': {'value': ['x86_64']}}}
2022-07-14 02:53:58,674 | Baking a new template with cookiecutter with all parameters
2022-07-14 02:53:58,727 | Error from cookiecutter: open() argument 6 must be str or None, not tuple
2022-07-14 02:53:58,728 | Template is not provided in context, skip adding project type metric

Expected result:

I expect it to create the sam app template folder with the necessary files present

sam-app
├── README.md
├── __init__.py
├── events
│   └── event.json
├── hello_world
│   ├── Dockerfile
│   ├── __init__.py
│   ├── app.py
│   └── requirements.txt
├── template.yaml
└── tests
    ├── __init__.py
    └── unit
        ├── __init__.py
        └── test_handler.py

4 directories, 11 files

Additional environment details (Ex: Windows, Mac, Amazon Linux etc)

1. OS: WSL Ubuntu 20.04
2. sam --version: SAM CLI, version 1.53.0
3. AWS region:

Add --debug flag to command you are running

[jfuss]

@abdulazeezoj Thanks for the report. Can you take a look at /home/user/.aws-sam/aws-sam-cli-app-templates/python3.8-image/cookiecutter-aws-sam-hello-python-lambda-image/{{cookiecutter.project_name}}/ on your machine. Does this have the expected files? It should match what you are expecting in your app.

I am trying to narrow down where/what could be happening. I tried this on my machine and got the expected results so wondering if somehow the cache is invalid on your machine (or partial).

[abdulazeezoj]

@jfuss yes the folder /home/user/.aws-sam/aws-sam-cli-app-templates/python3.8-image/cookiecutter-aws-sam-hello-python-lambda-image/{{cookiecutter.project_name}}/ contain the expected files.

{{cookiecutter.project_name}}
├── README.md
├── __init__.py
├── events
│   └── event.json
├── hello_world
│   ├── Dockerfile
│   ├── __init__.py
│   ├── app.py
│   └── requirements.txt
├── template.yaml
└── tests
    ├── __init__.py
    └── unit
        ├── __init__.py
        └── test_handler.py

4 directories, 11 files

[jfuss]

@abdulazeezoj So something probably in the copy (which is weird). Does this happen if you try again?

[abdulazeezoj]

This is the last line of the sam init --debug @jfuss

2022-07-14 02:53:58,674 | Parameters dict created with input given
2022-07-14 02:53:58,674 | {'template': '/home/user/.aws-sam/aws-sam-cli-app-templates/python3.8-image/cookiecutter-aws-sam-hello-python-lambda-image', 'output_dir': '.', 'no_input': True, 'extra_context': {'project_name': 'sam-app', 'runtime': 'python3.8', 'architectures': {'value': ['x86_64']}}}
2022-07-14 02:53:58,674 | Baking a new template with cookiecutter with all parameters
2022-07-14 02:53:58,727 | Error from cookiecutter: open() argument 6 must be str or None, not tuple
2022-07-14 02:53:58,728 | Template is not provided in context, skip adding project type metric

[jfuss]

@abdulazeezoj I have the same output on my machine but my app is all there. So I don't think that is related here at all.

So if you re-ran sam init, you still do not get the expected app files?

[abdulazeezoj]

@jfuss I still don't get the expected app files

[abdulazeezoj]

I'm running it in Ubuntu 20.04 WSL @jfuss. I also run it on my Windows 11, it also returns the same result.

sam-app
├── events
├── hello_world
└── tests

[abdulazeezoj]

I tried to run it with sam-cli version 1.47.0 and it works well

[abdulazeezoj]

Please resole this error
Error from cookiecutter: open() argument 6 must be str or None, not tuple