显示文件夹python中的所有图像的问题

Question

I want to show all images from a folder through python but got this error -

File "<tokenize>", line 18
    imagesList = listdir(path) IndentationError: unindent does not match any outer indentation level

code:

from os import listdir
from PIL import Image as PImage

def loadImages(path):

imagesList = listdir(path)
loadedImages = []
for image in imagesList:
    img = PImage.open(path + image)
    loadedImages.append(img)

return loadedImages

path = "CATS_DOGS/train/CAT/"
 imgs = loadImages(path)

for img in imgs:
img.show()

Answer 1

This is simply an indentation issue, just as the error says so.

This is how it should be:

from os import listdir
from PIL import Image as PImage

def loadImages(path):
   imagesList = listdir(path)
   loadedImages = []
   for image in imagesList:
      img = PImage.open(path + image)
      loadedImages.append(img)
      img.close()
   return loadedImages

path = "CATS_DOGS/train/CAT/"
imgs = loadImages(path)

for img in imgs:
   img.show()

Answer 2

That's because in python the syntax is to use indents (tab), instead the use of { } in other languages (like java, c# js, etc.), in order to enter an inner scope.

So just use indent in all your function code, which will define your code inside the function loadImages :

def loadImages(path):

    imagesList = listdir(path)
    loadedImages = []
    for image in imagesList:
        img = PImage.open(path + image)
        loadedImages.append(img)

    return loadedImages

path = "CATS_DOGS/train/CAT/"
imgs = loadImages(path)

for img in imgs:
img.show()

Plus, the line imgs = loadImages(path) was with 1 space indent, which may cause the same problem again.