SAM命令失败：ImportError：无法导入名称AliasedEventEmitter

Posted 2021-03-27

我正在使用buildspec.yml文件通过AWS CodeBuild运行SAM模板我相信这个问题是由pip安装aws-sam-cli软件包的默认python 2.7版本引起的。我不熟悉如何pip install python3版本的包。这是我的buildspec.yml的片段：

phases:
  pre_build:
    commands:
      - echo "Pre-Build Phase started - SAM Deployment"
      - alias python=python3
      - pip install --upgrade pip
      - pip install aws-sam-cli # install the sam cli
      - USER_BASE_PATH=$(python -m site --user-base) # save the path to the user's local packages folder to a variable (as opposed to the global packages folder)
      - export PATH=$PATH:$USER_BASE_PATH/bin # add the user's local packages folder to PATH
      - sam --version # verify "sam" can now be called
  build:
    commands:
      - sam package --runtime python3 --template-file ${INPUT_FILE} --output-template-file ${OUTPUT_FILE} --s3-bucket ${S3_BUCKET} # package the template to an S3 bucket
...

有没有人遇到过这个问题？

答案

对于任何重新审视这个问题的人，我都明白了。以下是我修订的buildspec.yml片段。我不得不用pip3安装awscli包。

phases:
  pre_build:
    commands:
      - echo "Pre-Build Phase started - SAM Deployment"
      - ls -ltr # list directory contents from oldest to new
      - sudo apt-get update
      - sudo apt-get -y install python3-pip
      - sudo pip3 install --upgrade awscli
      - apt-get update > /dev/null # get list of package updates from 
    repositories
      - apt-get install jq -y > /dev/null # install 32-bit JSON processor
      - jq --version # check JSON processor installed / which version
      - wget -q https://github.com/stedolan/jq/releases/download/jq-1.5/jq-linux64 # get 64-bit JSON processor
      - chmod +x jq-linux64 # make executable
      - mv jq-linux64 $(which jq) # make "jq" alias point to 64-bit jq
      - jq --version # verify jq points to new version
      - alias python=python3
      - pip install aws-sam-cli # install the sam cli
      - USER_BASE_PATH=$(python -m site --user-base) # save the path to the user's local packages folder to a variable (as opposed to the global packages folder)
      - export PATH=$PATH:$USER_BASE_PATH/bin # add the user's local packages folder to PATH
      - sam --version # verify "sam" can now be called
  build:
    commands:
      - sam package --template-file ${INPUT_FILE} --output-template-file ${OUTPUT_FILE} --s3-bucket ${S3_BUCKET} # package the template to an S3 bucket