在遵循 Python 脚本时需要帮助

Question

我必须：

1. 遍历文件夹中的每个文件

2. 对于每个文件：
   将图像顺时针旋转 90°，

   将图像大小从 192x192 调整为 128x128，

   将图像以 .jpeg 格式保存到新文件夹

我编写了以下脚本：

    #!/usr/bin/env python3
import os
from PIL import Image

def load_images(folder):
    images = os.listdir(folder)
    dst = "/home/mayank/Music/"
    try:
        for img in images:
            with Image.open(img) as im:
                im = Image.open(folder + '/' + img)
                #Rotating Images 90 degree Clockwise
                new_im = im.rotate(-90)
                #Resizing all images from 192x192 to 128x128
                new_im = new_im.resize(128,128)
                #Saving all images in new file
                new_im.save(dst+"/"+new_im, format = "jpeg")
                im.close()

except IOError as e:
    print(e)


if __name__ == "__main__":
    dir = load_images("/home/mayank/Music/images/")

给定的路径是正确的，但是每当我执行此代码时，它会显示所有文件之间的某些文件的以下消息：

[Errno 2] No such file or directory: 'ic_directions_transit_white_48dp'

您可以通过以下代码下载图片：

curl -c ./cookie -s -L "https://drive.google.com/uc?export=download&id=$11hg55-dKdHN63yJP20dMLAgPJ5oiTOHF" > /dev/null | curl -Lb ./cookie "https://drive.google.com/uc?export=download&confirm=`awk '/download/ {print $NF}' ./cookie`&id=11hg55-dKdHN63yJP20dMLAgPJ5oiTOHF" -o images.zip && sudo rm -rf cookie

我该如何解决这个问题？

Answer 1

您必须在线提供完整的文件路径

with Image.open(img) as im:

喜欢

with Image.open(folder+img) as im:

另外，对于连接文件路径，最好使用 os.path.join() func（它的操作系统类型无关），例如

im = Image.open(os.path.join(folder,img))

Answer 2

感谢您的所有建议，但在建议修改后我遇到了另一种情况。这是我修改后的代码：

#!/usr/bin/env python3
import os
from PIL import Image
import glob

def load_images(folder):
    images = os.listdir(folder)
    dst = "/home/mayank/Music/"
    try:
        for img in images:
            with Image.open(folder+img) as im:
                im = Image.open(os.path.join(folder+img))
                #Rotating Images 90 degree Clockwise
                new_im = im.rotate(-90)
                #Resizing all images from 192x192 to 128x128
                new_im = new_im.resize((128,128))
                #Saving all images in new file
                new_im.save(dst + new_im, format = "jpeg")
                im.close()

    except IOError as e:
        print(e)


if __name__ == "__main__":
    dir = load_images("/home/mayank/Music/images/")

现在我遇到了另一种情况，即，

Traceback (most recent call last):
  File "./images.py", line 26, in <module>
    dir = load_images("/home/mayank/Music/images/")
  File "./images.py", line 18, in load_images
    new_im.save(dst + new_im, format = "jpeg")
TypeError: can only concatenate str (not "Image") to str

Answer 3

我认为这是调整当前文件夹中图像文件大小的简单代码：

#!/usr/bin/env python3

import os,glob
from PIL import Image

newsize=(128,128)

for file in glob.glob("ic_*):

    im=Image.open(file).convert('RGB') #to work with invdividual bands we have to convert it to RGB
    im.rotate(270).resize(newsize).save("/opt/icons/"+file,"JPEG") #you can replace /opt/icons with dir in which you want to store new format images

Answer 4

如果您使用 .jpg 文件，此代码可以正常工作：

import os
from pathlib import Path
from PIL import Image

def load_images(folder):
    images = os.listdir(folder)
    p = Path(folder)
    for images in p.glob('*.jpg'):
        Im = Image.open(images)
        name= str(images.parent)+'/images/' +str(images.stem)+'.jpg'
        resizedIm = Im.resize((128,128))
        resizedIm.rotate(270).save(name)
load_images('/home/mayank/Music/')

Answer 5

#!/usr/bin/env python3

import os
import glob
from PIL import Image

resized_pictures=(128,128)

for file in glob.glob("ic_*"):

  im=Image.open(file).convert('RGB')

  im.rotate(-90).resize(resized_pictures).save("/opt/icons/"+file,"JPEG")

Answer 6

请试试这个，

    with Image.open(folder +  img) as im:

               #im = Image.open(folder + '/' + img)

其余代码不变