[英]python : error while saving image from url
我需要使用 Django 从 url 保存图像。 所以我确实像教程所说的那样,但出现了一个奇怪的错误。
page = requests.get(url)
if page.status_code != 200 or not page.content:
assert 0, 'can\'t download article image'
image = image_content_file(page.content)
article.image.save('%i.jpg' % article.pk, image, save=False)
我的文章模型:
class Article(models.Model):
title = models.CharField(max_length=255)
content = models.TextField(blank=True)
image = models.ImageField(blank=True, upload_to='upload/article_image')
date_created = models.DateTimeField(null=True, blank=True, db_index=True)
我已经创建了upload/article_image
文件夹并将其权限设置为 777
我的image_content_file
函数:
def image_content_file(img_content):
input_file = StringIO(img_content)
output_file = StringIO()
img = Image.open(input_file)
if img.mode != "RGB":
img = img.convert("RGB")
img.save(output_file, "JPEG")
return ContentFile(output_file.getvalue())
但我收到这个错误
image = image_content_file(page.content)
File "/home/yital9/webservers/binarybits/binarybits/../binarybits/utils/img.py", line 24, in image_content_file
img.save(output_file, "JPEG")
File "/usr/local/lib/python2.7/dist-packages/PIL/Image.py", line 1439, in save
save_handler(self, fp, filename)
File "/usr/local/lib/python2.7/dist-packages/PIL/JpegImagePlugin.py", line 471, in _save
ImageFile._save(im, fp, [("jpeg", (0,0)+im.size, 0, rawmode)])
File "/usr/local/lib/python2.7/dist-packages/PIL/ImageFile.py", line 481, in _save
e = Image._getencoder(im.mode, e, a, im.encoderconfig)
File "/usr/local/lib/python2.7/dist-packages/PIL/Image.py", line 399, in _getencoder
return apply(encoder, (mode,) + args + extra)
TypeError: function takes at most 9 arguments (11 given)
你能给我任何建议是什么问题吗?
这段代码应该做你需要的:
import urllib2
from django.core.files.base import ContentFile
content = ContentFile(urllib2.urlopen(url).read())
article.image.save('%i.jpg' % article.pk, content, save=True)
相反,如果您只想从网络下载图像,最好这样做:
from urllib import urlretrieve
urlretrieve(url, '%i.jpg' % article.pk)
要使其在 Python 3 中工作,您必须使用
urllib.request.urlretrieve(url=filepath)
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