[BUG] opt/python/opentelemetry on lambda

[rpostulart]

Checks

• I have updated to the lastest minor and patch version of Strands
• I have checked the documentation and this is not expected behavior
• I have searched ./issues and there are no duplicates of my issue

Strands Version

0.1.1

Python Version

3.11

Operating System

Mac

Installation Method

pip

Steps to Reproduce

When deploying strands via lambda I get this error

I tried pyhton 3.11 and 3.12

{
  "errorMessage": "",
  "errorType": "StopIteration",
  "requestId": "",
  "stackTrace": [
    "  File \"/var/lang/lib/python3.11/importlib/__init__.py\", line 126, in import_module\n    return *bootstrap.*gcd_import(name[level:], package, level)\n",
    "  File \"<frozen importlib._bootstrap>\", line 1204, in *gcd*import\n",
    "  File \"<frozen importlib._bootstrap>\", line 1176, in *find*and_load\n",
    "  File \"<frozen importlib._bootstrap>\", line 1147, in *find*and_load_unlocked\n",
    "  File \"<frozen importlib._bootstrap>\", line 690, in *load*unlocked\n",
    "  File \"<frozen importlib._bootstrap_external>\", line 940, in exec_module\n",
    "  File \"<frozen importlib._bootstrap>\", line 241, in *call*with_frames_removed\n",
    "  File \"/var/task/lambda_function.py\", line 8, in <module>\n    from strands import Agent\n",
    "  File \"/opt/python/strands/__init__.py\", line 3, in <module>\n    from . import agent, event_loop, models, telemetry, types\n",
    "  File \"/opt/python/strands/agent/__init__.py\", line 9, in <module>\n    from .agent import Agent\n",
    "  File \"/opt/python/strands/agent/agent.py\", line 22, in <module>\n    from opentelemetry import trace\n",
    "  File \"/opt/python/opentelemetry/trace/__init__.py\", line 85, in <module>\n    from opentelemetry import context as context_api\n",
    "  File \"/opt/python/opentelemetry/context/__init__.py\", line 70, in <module>\n    *RUNTIME*CONTEXT = *load*runtime_context()\n",
    "  File \"/opt/python/opentelemetry/context/__init__.py\", line 60, in *load*runtime_context\n    return next(  # type: ignore\n"
  ]
}

[ERROR]	2025-06-09T19:54:11.118Z		Failed to load context: contextvars_context, fallback to contextvars_context
Traceback (most recent call last):
  File "/opt/python/opentelemetry/context/__init__.py", line 46, in *load*runtime_context
    return next(  # type: ignore
           ^^^^^^^^^^^^^^^^^^^^^
StopIteration
[ERROR] StopIteration
Traceback (most recent call last):
  File "/var/lang/lib/python3.11/importlib/__init__.py", line 126, in import_module
    return *bootstrap.*gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1204, in *gcd*import
  File "<frozen importlib._bootstrap>", line 1176, in *find*and_load
  File "<frozen importlib._bootstrap>", line 1147, in *find*and_load_unlocked
  File "<frozen importlib._bootstrap>", line 690, in *load*unlocked
  File "<frozen importlib._bootstrap_external>", line 940, in exec_module
  File "<frozen importlib._bootstrap>", line 241, in *call*with_frames_removed
  File "/var/task/lambda_function.py", line 8, in <module>
    from strands import Agent
  File "/opt/python/strands/__init__.py", line 3, in <module>
    from . import agent, event_loop, models, telemetry, types
  File "/opt/python/strands/agent/__init__.py", line 9, in <module>
    from .agent import Agent
  File "/opt/python/strands/agent/agent.py", line 22, in <module>
    from opentelemetry import trace
  File "/opt/python/opentelemetry/trace/__init__.py", line 85, in <module>
    from opentelemetry import context as context_api
  File "/opt/python/opentelemetry/context/__init__.py", line 70, in <module>
    *RUNTIME*CONTEXT = *load*runtime_context()
  File "/opt/python/opentelemetry/context/__init__.py", line 60, in *load*runtime_context
    return next(  # type: ignore
INIT_REPORT Init Duration: 695.93 ms	Phase: init	Status: error	Error Type: Runtime.Unknown
[ERROR]	2025-06-09T19:54:11.735Z		Failed to load context: contextvars_context, fallback to contextvars_context
Traceback (most recent call last):
  File "/opt/python/opentelemetry/context/__init__.py", line 46, in *load*runtime_context
    return next(  # type: ignore
           ^^^^^^^^^^^^^^^^^^^^^
StopIteration
[ERROR] StopIteration
Traceback (most recent call last):
  File "/var/lang/lib/python3.11/importlib/__init__.py", line 126, in import_module
    return *bootstrap.*gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1204, in *gcd*import
  File "<frozen importlib._bootstrap>", line 1176, in *find*and_load
  File "<frozen importlib._bootstrap>", line 1147, in *find*and_load_unlocked
  File "<frozen importlib._bootstrap>", line 690, in *load*unlocked
  File "<frozen importlib._bootstrap_external>", line 940, in exec_module
  File "<frozen importlib._bootstrap>", line 241, in *call*with_frames_removed
  File "/var/task/lambda_function.py", line 8, in <module>
    from strands import Agent
  File "/opt/python/strands/__init__.py", line 3, in <module>
    from . import agent, event_loop, models, telemetry, types
  File "/opt/python/strands/agent/__init__.py", line 9, in <module>
    from .agent import Agent
  File "/opt/python/strands/agent/agent.py", line 22, in <module>
    from opentelemetry import trace
  File "/opt/python/opentelemetry/trace/__init__.py", line 85, in <module>
    from opentelemetry import context as context_api
  File "/opt/python/opentelemetry/context/__init__.py", line 70, in <module>
    *RUNTIME*CONTEXT = *load*runtime_context()
  File "/opt/python/opentelemetry/context/__init__.py", line 60, in *load*runtime_context
    return next(  # type: ignore
INIT_REPORT Init Duration: 595.41 ms	Phase: invoke	Status: error	Error Type: Runtime.Unknown
START RequestId: 5cca313d-b16a-4cbd-8423-188319c7073b Version: $LATEST
END RequestId: 5cca313d-b16a-4cbd-8423-188319c7073b
REPORT RequestId: 5cca313d-b16a-4cbd-8423-188319c7073b	Duration: 605.35 ms	Billed Duration: 606 ms	Memory Size: 2000 MB	Max Memory Used: 74 MB	Status: error	Error Type: Runtime.Unknown

I have this in my requirements.txt
strands-agents
strands-agents-tools
boto3
requests
pydantic

This is the script to build the zip file for lambda:

  $DOCKER_CMD run --rm \
        --entrypoint="" \
        -v "$PWD":/var/task \
        -w /var/task \
        public.ecr.aws/lambda/python:3.11 \
        /bin/bash -c "
            echo '=== Installing zip utility ==='
            yum update -y && yum install -y zip
            
            echo '=== Installing shared infrastructure dependencies ==='
            rm -rf python/
            mkdir python
            
            echo 'Contents of requirements.txt:'
            cat requirements.txt
            
            echo 'Installing packages with verbose output:'
            pip install -v -r requirements.txt -t python/
            
            echo '=== Checking installed packages ==='
            ls -la python/ | head -10
            echo 'Total packages installed:' \$(ls python/ | wc -l)
            
            echo '=== Looking for key modules ==='
            find python/ -name '*boto*' -type d | head -5
            find python/ -name '*aws*' -type d | head -5
            
            echo '=== Testing imports ==='
            cd python
            python3 -c 'import boto3; print(\"✅ boto3 import successful\")' || echo '❌ boto3 import failed'
            python3 -c 'import botocore; print(\"✅ botocore import successful\")' || echo '❌ botocore import failed'
            cd ..
            
            echo '=== Creating zip file ==='
            zip -r shared-infrastructure-layer.zip python/ -x '*.pyc' '*/__pycache__/*' '*/tests/*' '*.dist-info/*'
            echo 'Shared infrastructure layer build complete!'
            ls -la shared-infrastructure-layer.zip
        

Expected Behavior

Lambda invokes as expected

Actual Behavior

Error, see above

Additional Context

No response

Possible Solution

No response

Related Issues

No response

[karthiks3000]

+1

[rpostulart]

This seems to work.

Put this in requirements.txt

strands-agents

strands-agents-tools
boto3
botocore

pydantic
pydantic-core
typing-extensions

run this script to create the zip file:

#!/bin/bash
set -e

echo "🔍 Debugging layer build process..."

cd book-layer

echo "📋 Current requirements.txt:"
cat requirements.txt

echo ""
echo "🐳 Building layer with detailed output..."

docker run --rm \
  --entrypoint="" \
  -v "$PWD":/var/task \
  -w /var/task \
  public.ecr.aws/lambda/python:3.11 \
  /bin/bash -c "
    echo '=== Installing zip utility ==='
    yum update -y && yum install -y zip
    
    echo '=== Installing Python dependencies ==='
    rm -rf python/
    mkdir python
    
    echo 'Contents of requirements.txt:'
    cat requirements.txt
    
    echo 'Installing packages with verbose output:'
    pip install -v -r requirements.txt -t python/
    
    echo '=== Checking installed packages ==='
    ls -la python/
    
    echo '=== Looking for strands modules ==='
    find python/ -name '*strands*' -type d
    find python/ -name '*strands*' -type f | head -10
    
    echo '=== Testing imports ==='
    cd python
    python3 -c 'import strands; print(\"✅ strands import successful\")' || echo '❌ strands import failed'
    python3 -c 'import strands_tools; print(\"✅ strands_tools import successful\")' || echo '❌ strands_tools import failed'
    cd ..
    
    echo '=== Creating zip file ==='
    zip -r book-layer.zip python/
    echo 'Layer build complete!'
    ls -la book-layer.zip
  "

echo ""
echo "🔍 Checking final layer contents:"
unzip -l book-layer.zip | grep -E "(strands|__init__|\.py)" | head -20

echo ""
echo "✅ Layer debugging complete!"
echo "📊 Layer size: $(du -h book-agent-layer.zip | cut -f1)"

[karthiks3000]

@rpostulart did you try this on aws lambda? I'm still getting the error with those exact requirements.