Python for loop until index

Question

I have a list containing 10000 images. I want to show the 1st 10 images. How do I write the for loop in Python ?

from PIL import Image
import glob
image_list = []
for filename in glob.glob('<my_directory>*.pgm'):
    im=Image.open(filename)
    image_list.append(im)


import matplotlib.pyplot as plt

for i in range(10):
    plt.figure()
    plt.imshow(image_list[i])

That's my code. I have tried image_list(3), image_list(1:3) but it all doesn't work.

Slice up till 10: `image_list[:10]` – Moses Koledoye Jun 27 '16 at 09:50 — Moses Koledoye, Jun 27 '16 at 09:50
It still doesnt work. This is my code – Kong Jun 27 '16 at 11:46 — Kong, Jun 27 '16 at 11:46

score 0 · Answer 1 · answered Jun 27 '16 at 09:50

0

Slice the list

for ima in image_list[:10]:
    plt.figure()
    plt.imshow(ima)

answered Jun 27 '16 at 09:50

Neo

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score 0 · Answer 2 · answered Jun 27 '16 at 10:00

I guess you are trying to show the first 10 images sorted by its name. If so try as below:

for ima in sorted(image_list)[:10]:
    plt.figure()
    plt.imshow(ima)

Sample Result:

>>> image_list = ['img1.jpg', 'img2.jpg', 'img0.jpg']
>>> image_list
['img1.jpg', 'img2.jpg', 'img0.jpg']
>>> sorted(image_list)
['img0.jpg', 'img1.jpg', 'img2.jpg']
>>> for img in sorted(image_list)[:1]:
...  print img
...
img0.jpg

Python for loop until index

2 Answers2