AWS 使用 texttract 開始文檔分析不起作用

Question

我正在為我的學校做一個項目，我應該使用 textract 對表單進行文檔分析，並將 output 運行到 A2I，其中算法將確定表單是否被批准、拒絕或需要審查。 一旦將文檔上傳到 S3，應該觸發此文本 lambda function。 但是，當我遵循此文檔時，我會遇到語法錯誤； https://docs.aws.amazon.com/textract/latest/dg/API_StartDocumentAnalysis.html

我的代碼是：

import urllib.parse
import boto3

print('Loading function')

##Clients
s3 = boto3.client('s3')
textract = boto3.client('textract')

def analyzedata(bucketName,documentKey):
    print("Loading")
    AnalyzedData= textract.StartDocumentAnalysis("DocumentLocation": { 
      "S3Object": { 
         "Bucket": "bucketName",
         "Name": "documentKey",
      })
    detectedText = ''

    # Print detected text
    for item in AnalyzedData['Blocks']:
        if item['BlockType'] == 'LINE':
            detectedText += item['Text'] + '\n'
            
    return detectedText
      
def writeTextractToS3File(textractData, bucketName, createdS3Document):
    print('Loading writeTextractToS3File')
    generateFilePath = os.path.splitext(createdS3Document)[0] + '.csv'
    s3.put_object(Body=textractData, Bucket=bucketName, Key=generateFilePath)
    print('Generated ' + generateFilePath)





def lambda_handler(event, context):
    #print("Received event: " + json.dumps(event, indent=2))

    # Get the object from the event and show its content type
    bucket = event['Records'][0]['s3']['bucket']['name']
    key = urllib.parse.unquote_plus(event['Records'][0]['s3']['object']['key'], encoding='utf-8')
    try:
        detectedText = analyzedata(bucket, key)
        writeTextractToS3File(detectedText, bucket, key)
        
        return 'Processing Done!'
        
        
        
    except Exception as e:
        print(e)
        print('Error getting object {} from bucket {}. Make sure they exist and your bucket is in the same region as this function.'.format(key, bucket))
        raise e

代碼尚未完成，但我已經收到語法錯誤：

  "errorMessage": "Syntax error in module 'lambda_function': invalid syntax (lambda_function.py, line 13)",
  "errorType": "Runtime.UserCodeSyntaxError",
  "stackTrace": [
    "  File \"/var/task/lambda_function.py\" Line 13\n        AnalyzedData= textract.Start_Document_Analysis(\"DocumentLocation\": { \n"
  ]
}

Answer 1

根據boto3 docs ，您的語法應該更像：

AnalyzedData= textract.start_document_analysis(DocumentLocation={ 
  "S3Object": { 
     "Bucket": "bucketName",
     "Name": "documentKey",
  })

另請注意， FeatureTypes參數是根據需要列出的。

Answer 2

您應該嘗試 pip 安裝 awscli

pip install awscli

或 pip3 如果效果更好

然后導入並嘗試運行代碼。

Answer 3

我認為您為此缺少一個起始大括號字符。

AnalyzedData= textract.StartDocumentAnalysis("DocumentLocation": { # missing { in this line
  "S3Object": { 
     "Bucket": "bucketName",
     "Name": "documentKey",
  })