Error: Couldn't detect a version for the platform 'python' in the repo

Question

Error: Couldn't detect a version for the platform 'python' in the repo

Karthik Somu 20

Hello Team

We have developed Azure funciton from visual studio and it works locally and when try to deploy to Azure Portal, its resulted below error,

could you please help what needs to be done?

Thanks

4:57:13 PM fun-internal-nonpdn: Fetching changes.

4:57:14 PM fun-internal-nonpdn: Starting LocalZipHandler

4:57:14 PM fun-internal-nonpdn: Cleaning up temp folders from previous zip deployments and extracting pushed zip file /tmp/zipdeploy/fa100dc9-9117-4b40-9c42-7e84d6205191.zip (0.00 MB) to /tmp/zipdeploy/extracted

4:57:14 PM fun-internal-nonpdn: Exception in extracting and setting permissions on the zip file System.IO.Abstractions.FileInfoWrapper:System.IO.InvalidDataException: Central Directory corrupt.

4:57:14 PM fun-internal-nonpdn: ---> System.IO.IOException: Invalid argument : '/tmp/zipdeploy/fa100dc9-9117-4b40-9c42-7e84d6205191.zip'

4:57:14 PM fun-internal-nonpdn: at System.IO.Strategies.FileStreamHelpers.ThrowInvalidArgument(SafeFileHandle )

4:57:14 PM fun-internal-nonpdn: at System.IO.Strategies.OSFileStreamStrategy.Seek(Int64 , SeekOrigin )

4:57:14 PM fun-internal-nonpdn: at System.IO.Strategies.BufferedFileStreamStrategy.Seek(Int64 , SeekOrigin )

4:57:14 PM fun-internal-nonpdn: at System.IO.FileStream.Seek(Int64 , SeekOrigin )

4:57:14 PM fun-internal-nonpdn: at System.IO.Compression.ZipArchive.ReadEndOfCentralDirectory()

4:57:14 PM fun-internal-nonpdn: --- End of inner exception stack trace ---

4:57:14 PM fun-internal-nonpdn: at System.IO.Compression.ZipArchive.ReadEndOfCentralDirectory()

4:57:14 PM fun-internal-nonpdn: at System.IO.Compression.ZipArchive..ctor(Stream , ZipArchiveMode , Boolean , Encoding )

4:57:14 PM fun-internal-nonpdn: at System.IO.Compression.ZipArchive..ctor(Stream , ZipArchiveMode )

4:57:14 PM fun-internal-nonpdn: at Kudu.Services.Deployment.PushDeploymentController.LocalZipFetch(IRepository repository, DeploymentInfoBase deploymentInfo, String targetBranch, ILogger logger, ITracer tracer) in /tmp/KuduLite/Kudu.Services/Deployment/PushDeploymentController.cs:line 1214

4:57:17 PM fun-internal-nonpdn: Updating submodules.

4:57:18 PM fun-internal-nonpdn: Preparing deployment for commit id '973fa955-c'.

4:57:19 PM fun-internal-nonpdn: PreDeployment: context.CleanOutputPath False

4:57:19 PM fun-internal-nonpdn: PreDeployment: context.OutputPath /home/site/wwwroot

4:57:19 PM fun-internal-nonpdn: Repository path is /tmp/zipdeploy/extracted

4:57:19 PM fun-internal-nonpdn: Running oryx build...

4:57:19 PM fun-internal-nonpdn: Command: oryx build /tmp/zipdeploy/extracted -o /tmp/build/expressbuild --platform python --platform-version 3.10.4 -i /tmp/8dda900a4dc0055 -p packagedir=.python_packages/lib/site-packages

4:57:20 PM fun-internal-nonpdn: Operation performed by Microsoft Oryx, https://github.com/Microsoft/Oryx

4:57:20 PM fun-internal-nonpdn: Error: Couldn't detect a version for the platform 'python' in the repo.

4:57:20 PM fun-internal-nonpdn: You can report issues at https://github.com/Microsoft/Oryx/issues

4:57:20 PM fun-internal-nonpdn: Oryx Version: 0.2.20250522.1+cada9e85564f034d18420f8b5b38b3cf2259f321, Commit: cada9e85564f034d18420f8b5b38b3cf2259f321, ReleaseTagName: 20250522.1

4:57:20 PM fun-internal-nonpdn: Build Operation ID: b965660211b2af8a

4:57:20 PM fun-internal-nonpdn: Repository Commit : 973fa955-ca29-4928-bd99-bfe9347613c3

4:57:20 PM fun-internal-nonpdn: OS Type : bullseye

4:57:20 PM fun-internal-nonpdn: Image Type : githubactions

4:57:20 PM fun-internal-nonpdn: Primary SDK Storage URL: https://oryx-cdn.microsoft.io

4:57:20 PM fun-internal-nonpdn: Backup SDK Storage URL: https://oryxsdks-cdn.azureedge.net

4:57:20 PM fun-internal-nonpdn: Detecting platforms...

4:57:20 PM fun-internal-nonpdn: Could not detect any platform in the source directory.

4:57:21 PM fun-internal-nonpdn: /opt/Kudu/Scripts/starter.sh oryx build /tmp/zipdeploy/extracted -o /tmp/build/expressbuild --platform python --platform-version 3.10.4 -i /tmp/8dda900a4dc0055 -p packagedir=.python_packages/lib/site-packages

4:57:32 PM fun-internal-nonpdn: Syncing triggers...

4:57:34 PM fun-internal-nonpdn: Querying triggers...

4:57:38 PM fun-internal-nonpdn: No HTTP triggers found.

Thanks

Karthik

Ranashekar Guda 2,430 Reputation points Microsoft External Staff Moderator

2025-06-11T19:00:56.8466667+00:00
Hello @Karthik Somu,
The error message you're encountering, "Couldn't detect a version for the platform 'python' in the repo," suggests that the deployment process is unable to identify the Python environment or version specified in your project.

Here are some steps you can take to troubleshoot and resolve this issue:

Check Your Requirements: Ensure that your requirements.txt file is present in the root of your project and correctly lists all necessary Python packages. This file is crucial for Oryx to detect the Python platform.

Verify Python Version: Ensure that the Python version specified in your deployment settings matches the version you are using locally. You may want to specify a compatible version in your requirements.txt or in your Azure Function settings.

Deployment Package: Make sure that the deployment package is correctly structured. The zip file should contain the necessary files, including the requirements.txt, and should not be corrupt. You can try re-zipping the files and redeploying.

Build Settings: If you are manually publishing your package, ensure that both SCM_DO_BUILD_DURING_DEPLOYMENT and ENABLE_ORYX_BUILD are set to true in your application settings.

Use Azure Functions Core Tools: Consider using Azure Functions Core Tools to publish your function app. This can help ensure that the deployment process is handled correctly.

Ensure Your Project Structure: Make sure that your Azure function's repository has the necessary files in the root directory or the specified folder. Commonly required files for Python Azure Functions include:

A requirements.txt file that lists your dependencies.

Any Python files (.py) or an __init__.py.

Clean and Rebuild: If you’ve made recent changes, try cleaning your build environment. Remove the temp folders and previous deployments and then attempt to redeploy.

Kindly refer below links:
Quickstart: Create a function in Azure with Python using Visual Studio Code
Troubleshoot Python errors in Azure Functions
Hope this helps. Do let us know if you any further queries.
Karthik Somu 20 Reputation points

2025-06-12T09:34:49.9833333+00:00

Thanks Ranashekar Guda, I tried all the above but still same issue occurs.

is it possible for you to schedule call and connect with us to check?

here is the structure.

Thanks

Karthik
Ranashekar Guda 2,430 Reputation points Microsoft External Staff Moderator

2025-06-13T00:28:36.45+00:00

Hello @Karthik Somu,
I have reached out to you over private message could you please check and help me with requested information to assist you further on this.
Karthik Somu 20 Reputation points

2025-06-13T05:35:08.18+00:00

Hi Ranashekar Guda,

for the issue: Error: Couldn't detect a version for the platform 'python' in the repo

Solution: It's due to the firewall blocking the required Python dependency for downloading, hence this failure. Therefore, we must speak to the network team to add a firewall rule that allows the dependency to be downloaded during deployment to the portal.

also, we must have all below requirement is in place and must be installed using pip install -r requirements.txt, so that its resolved all issues.

requirements.txt:

asn1crypto==1.5.1

azure-core==1.34.0

azure-functions==1.23.0

azure-identity==1.23.0

azure-keyvault-keys==4.10.0

azure-keyvault-secrets==4.9.0

bcrypt==4.3.0

certifi==2025.4.26

cffi==1.16.0

charset-normalizer==3.4.2

cryptography==41.0.3

gmpy2==2.1.2

grpcio==1.73.0

grpcio-tools==1.73.0

idna==3.10

isodate==0.7.2

MarkupSafe==3.0.2

msal==1.32.3

msal-extensions==1.3.1

paramiko==3.4.0

paramiko-cloud==1.3.0

PGPy==0.6.0

protobuf==6.31.1

pyasn1==0.6.1

pycparser==2.22

PyJWT==2.10.1

PyNaCl==1.5.0

PySocks==1.7.1

requests==2.32.4

six==1.17.0

typing_extensions==4.14.0

urllib3==2.4.0

Werkzeug==3.1.3

Thanks

Karthik

1 answer

Your answer

Karthik Somu 20 Reputation points

2025-06-12T09:34:49.9833333+00:00

Thanks Ranashekar Guda, I tried all the above but still same issue occurs.

is it possible for you to schedule call and connect with us to check?

here is the structure.

Thanks

Karthik
Ranashekar Guda 2,430 Reputation points Microsoft External Staff Moderator

2025-06-13T00:28:36.45+00:00

Hello @Karthik Somu,
I have reached out to you over private message could you please check and help me with requested information to assist you further on this.
Karthik Somu 20 Reputation points

2025-06-13T05:35:08.18+00:00

Hi Ranashekar Guda,

for the issue: Error: Couldn't detect a version for the platform 'python' in the repo

Solution: It's due to the firewall blocking the required Python dependency for downloading, hence this failure. Therefore, we must speak to the network team to add a firewall rule that allows the dependency to be downloaded during deployment to the portal.

also, we must have all below requirement is in place and must be installed using pip install -r requirements.txt, so that its resolved all issues.

requirements.txt:

asn1crypto==1.5.1

azure-core==1.34.0

azure-functions==1.23.0

azure-identity==1.23.0

azure-keyvault-keys==4.10.0

azure-keyvault-secrets==4.9.0

bcrypt==4.3.0

certifi==2025.4.26

cffi==1.16.0

charset-normalizer==3.4.2

cryptography==41.0.3

gmpy2==2.1.2

grpcio==1.73.0

grpcio-tools==1.73.0

idna==3.10

isodate==0.7.2

MarkupSafe==3.0.2

msal==1.32.3

msal-extensions==1.3.1

paramiko==3.4.0

paramiko-cloud==1.3.0

PGPy==0.6.0

protobuf==6.31.1

pyasn1==0.6.1

pycparser==2.22

PyJWT==2.10.1

PyNaCl==1.5.0

PySocks==1.7.1

requests==2.32.4

six==1.17.0

typing_extensions==4.14.0

urllib3==2.4.0

Werkzeug==3.1.3

Thanks

Karthik

Answer 1

Hello @Karthik Somu,
I'm glad that you were able to resolve your issue and thank you for posting your solution so that others experiencing the same thing can easily reference this! Since the Microsoft Q&A community has a policy that "The question author cannot accept their own answer. They can only accept answers by others ", I'll repost your solution in case you'd like to "Accept " the answer.

Issue: Error: Couldn't detect a version for the platform 'python' in the repo

Solution: It's due to the firewall blocking the required Python dependency for downloading, hence this failure. Therefore, we must speak to the network team to add a firewall rule that allows the dependency to be downloaded during deployment to the portal.

also, we must have all below requirement is in place and must be installed using pip install -r requirements.txt, so that its resolved all issues.

If you have any other questions or are still running into more issues, please let me know. Thank you again for your time and patience throughout this issue.

Please remember to "Accept Answer" if any answer/reply helped, so that others in the community facing similar issues can easily find the solution.

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Error: Couldn't detect a version for the platform 'python' in the repo

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