[英]Python + Wand.Image - saving output images to AWS with sequential pagenumber.jpg names
我正在研究一个脚本,该脚本会将Internet上的PDF(不保存到磁盘)转换为一系列jpeg,然后将JPG保存到AWS s3。
不幸的是,下面的代码仅将PDF的第一页另存为JPG到AWS。 关于如何修改它以使用顺序文件名将图像保存到AWS的任何想法?
from urllib2 import urlopen
from wand.image import Image
from io import BytesIO
import boto3
s3 = boto3.client(
's3',
aws_access_key_id='mykey',
aws_secret_access_key='mykey'
)
bucket_name = 'testbucketAWS323'
#location on disk
#file prefix
test_id = 'example'
f = urlopen("https://s3.us-east-2.amazonaws.com/converted1jpgs/example.pdf")
bytes_io_file = BytesIO()
with Image(file=f) as img:
print('pages = ', len(img.sequence))
with img.convert('png') as converted:
bytes_io_file = BytesIO(converted.make_blob('jpeg'))
#code below should take 'converted' object, and save it to AWS as jpg.
s3.upload_fileobj(bytes_io_file, bucket_name, "assssd.jpg")
print 'done'
只需枚举文档页面( wand.image.Image.sequence
)即可获得页码和资源。 将页面资源复制到Image
的新实例后,直接导出blob,不必担心中间转换。
from urllib2 import urlopen
from wand.image import Image
from io import BytesIO
import boto3
# ....
url = 'https://s3.us-east-2.amazonaws.com/converted1jpgs/example.pdf'
resource = urlopen(url)
with Image(file=resource) as document:
for page_number, page in enumerate(document.sequence):
with Image(page) as img:
bytes_io_file = BytesIO(img.make_blob('JPEG'))
filename = 'output_{0}.jpg'.format(page_number)
s3.upload_fileobj(bytes_io_file, bucket_name, filename)
在转换时使用upload_fileobj方法怎么样?
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