去写爬虫期间，发现有些图片地址，虽然是有的，但是实际上是1×1的空图片：
而另外一些图片地址，才是正常的：
所以希望：
用Python代码，能通过图片的url地址，检测出这些图片的基本参数信息，比如分辨率等等
python 检测在线图片属性
图片EXIF信息获取，在线获取图片EXIF信息
去找找PIL
python pil
➜ crawler_fablexile_book git:(master) ✗ pip install pillow Collecting pillow Downloading https://files.pythonhosted.org/packages/2e/f6/e6d56ec19fae0b76932a343355c7a37198fd8e76c26bc2f2779fc85b4684/Pillow-5.3.0-cp27-cp27m-macosx_10_6_intel.macosx_10_9_intel.macosx_10_9_x86_64.macosx_10_10_intel.macosx_10_10_x86_64.whl (3.6MB) 100% |████████████████████████████████| 3.6MB 2.1MB/s matplotlib 1.3.1 requires nose, which is not installed. matplotlib 1.3.1 requires tornado, which is not installed. pyopenssl 18.0.0 has requirement six>=1.5.2, but you'll have six 1.4.1 which is incompatible. Installing collected packages: pillow Could not install packages due to an EnvironmentError: [Errno 13] Permission denied: '/Library/Python/2.7/site-packages/PIL' Consider using the `--user` option or check the permissions. You are using pip version 10.0.1, however version 18.1 is available. You should consider upgrading via the 'pip install --upgrade pip' command. ➜ crawler_fablexile_book git:(master) ✗ pip3 install pillow --user Collecting pillow Cache entry deserialization failed, entry ignored Downloading https://files.pythonhosted.org/packages/d1/21/bef2816809fac16754e07ed935469fc65f42ced1a94766de7c804179311d/Pillow-5.3.0-cp36-cp36m-macosx_10_6_intel.macosx_10_9_intel.macosx_10_9_x86_64.macosx_10_10_intel.macosx_10_10_x86_64.whl (3.6MB) 100% |████████████████████████████████| 3.6MB 725kB/s Installing collected packages: pillow Successfully installed pillow-5.3.0 You are using pip version 10.0.1, however version 18.1 is available. You should consider upgrading via the 'pip install --upgrade pip' command. ➜ crawler_fablexile_book git:(master) ✗ pip3 show pillow Name: Pillow Version: 5.3.0 Summary: Python Imaging Library (Fork) Home-page: http://python-pillow.org Author: Alex Clark (Fork Author) Author-email: [email protected] License: Standard PIL License Location: /Users/crifan/Library/Python/3.6/lib/python/site-packages Requires: Required-by: You are using pip version 10.0.1, however version 18.1 is available. You should consider upgrading via the 'pip install --upgrade pip' command. ➜ crawler_fablexile_book git:(master) ✗ which pip3 /usr/local/bin/pip3
然后去调试代码：
from PIL import Image
TestImgPathList = [
"https://images-na.ssl-images-amazon.com/images/P/141972486X.jpg", # 1x1
"https://images-na.ssl-images-amazon.com/images/P/0061992275.jpg", # normal
]
def detectImgageInfo():
for curImgPath in TestImgPathList:
print("curImgPath=%s" % curImgPath)
img = Image.open(curImgPath)
print("img=%s" % img)
imgSize = img.size
print("imgSize=%s" % imgSize)
if __name__ == "__main__":
detectImgageInfo()直接报错：
发生异常: FileNotFoundError
python pillow load image from url
【已解决】Python的Pillow打开图片出错：OSError cannot identify image file _io.BytesIO object at
再去参考：
去完善异常处理
【总结】
最后用如下代码：
from PIL import Image
# import requests
# import cStringIO
# import urllib2 as urllib
import urllib
TestImgUrlList = [
"https://images-na.ssl-images-amazon.com/images/P/141972486X.jpg", # 1x1
"https://images-na.ssl-images-amazon.com/images/P/0061992275.jpg", # normal
]
# def getImgRawData(imgUrl):
# respImgStream = requests.get(imgUrl, stream=True)
# respImgStream.raw.decode_content = True
# imgRawData = respImgStream.raw
# print("imgRawData=%s" % imgRawData)
# return imgRawData
def getImgFile(imgUrl):
print("getImgFile: imgUrl=%s" % imgUrl)
getOk = False
imgFileOrErrMsg = ""
try:
imgFileObj = urllib.request.urlopen(imgUrl)
print("imgFileObj=%s" % imgFileObj)
getOk = True
imgFileOrErrMsg = imgFileObj
except urllib.error.URLError as urlErr:
getOk = False
imgFileOrErrMsg = str(urlErr.reason)
return getOk, imgFileOrErrMsg
def detectImgageInfoFromUrl():
for curImgUrl in TestImgUrlList:
print("curImgUrl=%s" % curImgUrl)
# imgRawData = getImgRawData(curImgUrl)
# img = Image.open(imgRawData)
getOk, imgFileOrErrMsg = getImgFile(curImgUrl)
print("getOk=%s, imgFileOrErrMsg=%s" % (getOk, imgFileOrErrMsg))
if getOk:
imgFile = imgFileOrErrMsg
print("imgFile=%s" % imgFile)
img = Image.open(imgFile)
print("img=%s" % img)
(imgWidth, imgHeight) = img.size
print("imgWidth=%s, imgHeight=%s" % (imgWidth, imgHeight)) # 1x1 / 354x500
else:
print("Get image url %s failed: %s" %(curImgUrl, imgFileOrErrMsg))
if __name__ == "__main__":
detectImgageInfoFromUrl()输出：
curImgUrl=https://images-na.ssl-images-amazon.com/images/P/141972486X.jpg getImgFile: imgUrl=https://images-na.ssl-images-amazon.com/images/P/141972486X.jpg imgFileObj=<http.client.HTTPResponse object at 0x10e4042e8> getOk=True, imgFileOrErrMsg=<http.client.HTTPResponse object at 0x10e4042e8> imgFile=<http.client.HTTPResponse object at 0x10e4042e8> img=<PIL.GifImagePlugin.GifImageFile image mode=P size=1x1 at 0x10E176240> imgWidth=1, imgHeight=1 curImgUrl=https://images-na.ssl-images-amazon.com/images/P/0061992275.jpg getImgFile: imgUrl=https://images-na.ssl-images-amazon.com/images/P/0061992275.jpg imgFileObj=<http.client.HTTPResponse object at 0x10e1aa208> getOk=True, imgFileOrErrMsg=<http.client.HTTPResponse object at 0x10e1aa208> imgFile=<http.client.HTTPResponse object at 0x10e1aa208> img=<PIL.JpegImagePlugin.JpegImageFile image mode=RGB size=354x500 at 0x10E417978> imgWidth=354, imgHeight=500
即可得到希望的结果了。
此处1×1不正常的图片的各种属性：
正常的图片的各种属性：
转载请注明：在路上 » 【已解决】Python中判断本地和网络图片的分辨率等基本信息