Python_函数计算-阿里云帮助中心

通过函数计算的Custom Runtime，您可以使用Python 3.7在函数计算平台编写函数。本文介绍如何快速部署和调用Python函数。您可以修改Python示例中的代码实现二次开发，满足您的需求。

前提条件

操作步骤

在目标目录中，执行以下命令，初始化项目。
```
s init fc-custom-python37-event
```
执行以下命令，进入项目目录。
```
cd fc-custom-python37-event
```
可选：您可以修改示例代码，实现二次开发。

执行以下命令，安装依赖。

s build -d

输出示例：

[2021-12-24 09:42:25] [INFO] [S-CLI] - Start ...
[2021-12-24 09:42:26] [INFO] [FC-BUILD] - Build artifact start...
[2021-12-24 09:42:26] [INFO] [FC-BUILD] - Use docker for building.
[2021-12-24 09:42:26] [INFO] [FC-BUILD] - Build function using image: registry.cn-beijing.aliyuncs.com/aliyunfc/runtime-custom:build-1.9.21
[2021-12-24 09:42:27] [INFO] [FC-BUILD] - begin pulling image registry.cn-beijing.aliyuncs.com/aliyunfc/runtime-custom:build-1.9.21, you can also use docker pull registry.cn-beijing.aliyuncs.com/aliyunfc/runtime-custom:build-1.9.21 to pull image by yourself.
build-1.9.21: Pulling from aliyunfc/runtime-custom
......
Digest: sha256:29057f611f84f43a38fae4e69ea3f8ef6acbc077fb08b603f1626621bf79****
Status: Downloaded newer image for registry.cn-beijing.aliyuncs.com/aliyunfc/runtime-custom:build-1.9.21
[2021-12-24 09:44:26] [INFO] [FC-BUILD] - Build artifact successfully.

Tips for next step
======================
* Invoke Event Function: s local invoke
* Invoke Http Function: s local start
* Deploy Resources: s deploy
End of method: build

执行以下命令，部署项目。

s deploy -y

输出示例：

[2021-12-24 09:49:31] [INFO] [S-CLI] - Start ...
[2021-12-24 09:49:31] [INFO] [S-CLI] - Start the pre-action
[2021-12-24 09:49:31] [INFO] [S-CLI] - Action: s build --use-docker
[2021-12-24 09:49:31] [INFO] [S-CLI] - Start ...
[2021-12-24 09:49:32] [INFO] [FC-BUILD] - Build artifact start...
[2021-12-24 09:49:32] [INFO] [FC-BUILD] - Use docker for building.
[2021-12-24 09:49:32] [INFO] [FC-BUILD] - Build function using image: registry.cn-beijing.aliyuncs.com/aliyunfc/runtime-custom:build-1.9.21
[2021-12-24 09:49:32] [INFO] [FC-BUILD] - skip pulling image registry.cn-beijing.aliyuncs.com/aliyunfc/runtime-custom:build-1.9.21...
[2021-12-24 09:50:02] [INFO] [FC-BUILD] - Build artifact successfully.

Tips for next step
======================
* Invoke Event Function: s local invoke
* Invoke Http Function: s local start
* Deploy Resources: s deploy
End of method: build
[2021-12-24 09:50:02] [INFO] [S-CLI] - End the pre-action
 Using fc deploy type: sdk, If you want to deploy with pulumi, you can [s cli fc-default set deploy-type pulumi] to switch.
 devsapp_fc-plan.zip file decompression completed
 Checking Function pyEventFunc exists
Detail:

updated:
  LD_LIBRARY_PATH: /code/.s/root/usr/local/lib:/code/.s/root/usr/lib:/code/.s/root/usr/lib/x86_64-linux-gnu:/code/.s/root/usr/lib64:/code/.s/root/lib:/code/.s/root/lib/x86_64-linux-gnu:/code/.s/root/python/lib/python2.7/site-packages:/code/.s/root/python/lib/python3.6/site-packages:/code:/code/lib:/usr/local/lib
  PATH:            /code/.s/root/usr/local/bin:/code/.s/root/usr/local/sbin:/code/.s/root/usr/bin:/code/.s/root/usr/sbin:/code/.s/root/sbin:/code/.s/root/bin:/code:/code/node_modules/.bin:/code/.s/python/bin:/code/.s/node_modules/.bin:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/sbin:/bin
  NODE_PATH:       /code/node_modules:/usr/local/lib/node_modules
  PYTHONUSERBASE:  /code/.s/python
{
  "LD_LIBRARY_PATH": "/code/.s/root/usr/local/lib:/code/.s/root/usr/lib:/code/.s/root/usr/lib/x86_64-linux-gnu:/code/.s/root/usr/lib64:/code/.s/root/lib:/code/.s/root/lib/x86_64-linux-gnu:/code/.s/root/python/lib/python2.7/site-packages:/code/.s/root/python/lib/python3.6/site-packages:/code:/code/lib:/usr/local/lib",
  "PATH": "/code/.s/root/usr/local/bin:/code/.s/root/usr/local/sbin:/code/.s/root/usr/bin:/code/.s/root/usr/sbin:/code/.s/root/sbin:/code/.s/root/bin:/code:/code/node_modules/.bin:/code/.s/python/bin:/code/.s/node_modules/.bin:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/sbin:/bin",
  "NODE_PATH": "/code/node_modules:/usr/local/lib/node_modules",
  "PYTHONUSERBASE": "/code/.s/python"
}
 Checking Service, Function (3.53s)
 Creating Service, Function (18.03s)

Tips for next step
======================
* Display information of the deployed resource: s info
* Display metrics: s metrics
* Display logs: s logs
* Invoke remote function: s invoke
* Remove Service: s remove service
* Remove Function: s remove function
* Remove Trigger: s remove trigger
* Remove CustomDomain: s remove domain

helloworld:
  region:   cn-hangzhou
  service:
    name: hello-world-service
  function:
    name:       pyEventFunc
    runtime:    custom
    handler:    index.handler
    memorySize: 1536
    timeout:    30

执行以下命令，远程调用函数。

s invoke -e "{}"

输出示例：

[2021-12-24 10:00:12] [INFO] [S-CLI] - Start ...
========= FC invoke Logs begin =========

Duration: 780.81 ms, Billed Duration: 781 ms, Memory Size: 1536 MB, Max Memory Used: 80.67 MB
========= FC invoke Logs end =========

FC Invoke Result:
{}

End of method: invoke