是什么导致我的条件缩进错误[Python] [duplicate]

Question

此问题已经在这里有了答案：

Python - Indentation error while using IDLE and if - else block, works fine on command line（5个答案）

[<7天前关闭。

所以，我有这段代码，我在其中通过IF语句比较了五个图像（不要介意代码的那部分，我只是想给你们一些上下文），但是它们内部却出现了缩进错误而我解决不了。我只是看不到我的错误，我需要第二个意见:(

import cv2

width=50
height=50
dimension = (width,height)

img1 = cv2.cv2.imread('D:/Scripts/img/CAPTCHA/Imagen_0.png',cv2.cv2.IMREAD_GRAYSCALE)
img2 = cv2.cv2.imread('D:/Scripts/img/CAPTCHA/Imagen_1.png',cv2.cv2.IMREAD_GRAYSCALE)
img3 = cv2.cv2.imread('D:/Scripts/img/CAPTCHA/Imagen_2.png',cv2.cv2.IMREAD_GRAYSCALE)
img4 = cv2.cv2.imread('D:/Scripts/img/CAPTCHA/Imagen_3.png',cv2.cv2.IMREAD_GRAYSCALE)
img5 = cv2.cv2.imread('D:/Scripts/img/CAPTCHA/Imagen_4.png',cv2.cv2.IMREAD_GRAYSCALE)

img1 = cv2.cv2.resize(img1,dimension,interpolation=cv2.cv2.INTER_AREA)
img2 = cv2.cv2.resize(img2,dimension,interpolation=cv2.cv2.INTER_AREA)
img3 = cv2.cv2.resize(img3,dimension,interpolation=cv2.cv2.INTER_AREA)
img4 = cv2.cv2.resize(img4,dimension,interpolation=cv2.cv2.INTER_AREA)
img5 = cv2.cv2.resize(img5,dimension,interpolation=cv2.cv2.INTER_AREA)


if cv2.cv2.countNonZero(img1[0]) != cv2.cv2.countNonZero(img2[0]):
    if cv2.cv2.countNonZero(img1[0]) == cv2.cv2.countNonZero(img3[0]):
        #search image 2
    else:
        #search image 1
else:
    if cv2.cv2.countNonZero(img1[0]) != cv2.cv2.countNonZero(img3[0]):
        if cv2.cv2.countNonZero(img1[0]) == cv2.cv2.countNonZero(img4[0]):
            #search image 3
        else:
            #no image found
    else:
        if cv2.cv2.countNonZero(img1[0]) != cv2.cv2.countNonZero(img4[0]):
            if cv2.cv2.countNonZero(img1[0]) == cv2.cv2.countNonZero(img5[0]):
                #search image 4
        else:
                #search image 5

[请帮助我处理IF语句结构，不用担心其余的代码:(我只需要解决缩进问题。

Answer 1

您需要在每个条件中包含某种有效的代码。在准备好在此处编写代码之前，请使用pass作为占位符：

if cv2.cv2.countNonZero(img1[0]) != cv2.cv2.countNonZero(img2[0]):
    if cv2.cv2.countNonZero(img1[0]) == cv2.cv2.countNonZero(img3[0]):
        #search image 2
        pass
    else:
        #search image 1
        pass
else:
    if cv2.cv2.countNonZero(img1[0]) != cv2.cv2.countNonZero(img3[0]):
        if cv2.cv2.countNonZero(img1[0]) == cv2.cv2.countNonZero(img4[0]):
            #search image 3
            pass
        else:
            #no image found
            pass
    else:
        if cv2.cv2.countNonZero(img1[0]) != cv2.cv2.countNonZero(img4[0]):
            if cv2.cv2.countNonZero(img1[0]) == cv2.cv2.countNonZero(img5[0]):
                #search image 4
                pass
        else:
            pass
                #search image 5

pass上的一些额外阅读：
https://www.programiz.com/python-programming/pass-statement
https://www.educative.io/edpresso/what-is-pass-statement-in-python
https://www.w3schools.com/python/ref_keyword_pass.asp
How to use the pass statement?
https://www.geeksforgeeks.org/break-continue-and-pass-in-python/