我试图使用以下功能:
def image_from_url(url):
"""
Read an image from a URL. Returns a numpy array with the pixel data.
We write the image to a temporary file then read it back. Kinda gross.
"""
try:
f = urllib.request.urlopen(url)
_, fname = tempfile.mkstemp()
with open(fname, 'wb') as ff:
ff.write(f.read())
img = imread(fname)
os.remove(fname)
return img
except urllib.error.URLError as e:
print('URL Error: ', e.reason, url)
except urllib.error.HTTPError as e:
print('HTTP Error: ', e.code, url)
但我继续收到以下错误:
---> 67 os.remove(fname)
68 return img
69 except urllib.error.URLError as e:
PermissionError: [WinError 32] The process cannot access the file because it is being used by another process: 'C:\\Users\\Nir\\AppData\\Local\\Temp\\tmp8p_pmso5'
我的机器上没有其他进程正在运行(据我所知)。如果我遗漏了os.remove(fname)
函数,那么代码运行良好,但我不想让我的临时文件夹填满垃圾。
知道是什么让图片不被删除?
答案 0 :(得分:0)
您是否尝试过TemporaryFile()等?是否有特殊原因要使用mkstemp()?这种事情可能会起作用
import urllib, io
from PIL import Image
import numpy as np
file = io.BytesIO(urllib.request.urlopen(URL).read()) # edit to work on py3
a = np.array(Image.open(file))
PS你可以将图像数据读入一个像How do I read image data from a URL in Python?
这样描述的数组中{{1}}
答案 1 :(得分:0)
我也遇到同样的错误。我已经一次又一次卸载了Anaconda,但仍然遇到相同的错误。幸运的是,我发现此网站(https://www.logilab.org/blogentry/17873)可以解决我的问题。 详细说明: 修改:
try:
f = urllib.request.urlopen(url)
_, fname = tempfile.mkstemp()
with open(fname, 'wb') as ff:
ff.write(f.read())
img = imread(fname)
os.remove(fname)
return img
至:
try:
f = urllib.request.urlopen(url)
fd, fname = tempfile.mkstemp()
with open(fname, 'wb') as ff:
ff.write(f.read())
img = imread(fname)
os.close(fd)
os.remove(fname)
return img