How to auto-indent python code using keyboard shortcuts

Question

I have following code:

for im_fn in tqdm(im_fns):
    try:
        _, fn = os.path.split(im_fn)
        bfn, ext = os.path.splitext(fn)
        if ext.lower() not in ['.jpg', '.png']:
            continue

        gt_path = os.path.join(DATA_FOLDER, "label", 'gt_' + bfn + '.txt')
        img_path = os.path.join(DATA_FOLDER, "image", im_fn)

        img = cv.imread(img_path)
        img_size = img.shape
        im_size_min = np.min(img_size[0:2])
        im_size_max = np.max(img_size[0:2])

        im_scale = float(600) / float(im_size_min)
        if np.round(im_scale * im_size_max) > 1200:
            im_scale = float(1200) / float(im_size_max)
        new_h = int(img_size[0] * im_scale)
        new_w = int(img_size[1] * im_scale)

        new_h = new_h if new_h // 16 == 0 else (new_h // 16 + 1) * 16
        new_w = new_w if new_w // 16 == 0 else (new_w // 16 + 1) * 16

        re_im = cv.resize(img, (new_w, new_h), interpolation=cv.INTER_LINEAR)
        re_size = re_im.shape

        polys = []
        with open(gt_path, 'r') as f:
            lines = f.readlines()
        for line in lines:
            splitted_line = line.strip().lower().split(',')
            x1, y1, x2, y2, x3, y3, x4, y4 = map(float, splitted_line[:8])
            poly = np.array([x1, y1, x2, y2, x3, y3, x4, y4]).reshape([4, 2])
            poly[:, 0] = poly[:, 0] / img_size[1] * re_size[1]
            poly[:, 1] = poly[:, 1] / img_size[0] * re_size[0]
            poly = orderConvex(poly)
            polys.append(poly)

            # cv.polylines(re_im, [poly.astype(np.int32).reshape((-1, 1, 2))], True,color=(0, 255, 0), thickness=2)

        res_polys = []
        for poly in polys:
            # delete polys with width less than 10 pixel
            if np.linalg.norm(poly[0] - poly[1]) < 10 or np.linalg.norm(poly[3] - poly[0]) < 10:
                continue

            res = shrink_poly(poly)
            # for p in res:
            #    cv.polylines(re_im, [p.astype(np.int32).reshape((-1, 1, 2))], True, color=(0, 255, 0), thickness=1)

            res = res.reshape([-1, 4, 2])
            for r in res:
                x_min = np.min(r[:, 0])
                y_min = np.min(r[:, 1])
                x_max = np.max(r[:, 0])
                y_max = np.max(r[:, 1])

                res_polys.append([x_min, y_min, x_max, y_max])

        cv.imwrite(os.path.join(OUTPUT, "image", fn), re_im)
        with open(os.path.join(OUTPUT, "label", bfn) + ".txt", "w") as f:
            for p in res_polys:
                line = ",".join(str(p[i]) for i in range(4))
                f.writelines(line + "\r\n")
                for p in res_polys:
                    cv.rectangle(re_im,(p[0],p[1]),(p[2],p[3]),color=(0,0,255),thickness=1)

                cv.imshow("demo",re_im)
                cv.waitKey(0)
    except:
        print("Error processing {}".format(im_fn))

In the above code I want to remove the uppermost for loop, try and except statement.

for im_fn in tqdm(im_fns):
    try:


    except:
        print("Error processing {}".format(im_fn))

How ever after removing this I don't want to manually go in the remaining code and press backspace and manually put the indentations. IS there any key board shortcut which will auto indent the existing code after removing the for loop.

What's the editor are you using? – Vladimir Jul 02 '19 at 06:30 — Vladimir, Jul 02 '19 at 06:30
Try: select all and `shift` + `tab` – WiseDev Jul 02 '19 at 06:32 — WiseDev, Jul 02 '19 at 06:32
Use `ctrl+[` if you are using IDLE. – Rahul Raut Jul 02 '19 at 07:14 — Rahul Raut, Jul 02 '19 at 07:14

score 2 · Accepted Answer · answered Jul 02 '19 at 07:04

2

Select all the code you need to indent. With tab you will indent "in" and with Shift+tab you will indent it "out"

answered Jul 02 '19 at 07:04

FireFox1616

70
9

@Matthias you're right i didn't fought about vi. However in that case the question was already answered: [link to other Question](https://stackoverflow.com/questions/235839/indent-multiple-lines-quickly-in-vi) – FireFox1616 Jul 02 '19 at 08:37

score 0 · Answer 2 · edited Jul 02 '19 at 07:08

0

shift + tab works in the above scenario

edited Jul 02 '19 at 07:08

MH2K9

11,951
7
32
49

answered Jul 02 '19 at 06:40

project project

35
1
7

score 0 · Answer 3 · answered May 28 '23 at 11:48

0

If IDLE is used , the best solution is ctrl+[ for indentation in and ctrl+] for indentation out.

answered May 28 '23 at 11:48

K V Ramana

1
1

How to auto-indent python code using keyboard shortcuts

3 Answers3