FileNotFoundError - 从 WindowsPath 对象打开图像时遇到问题

Question

遍历此列表和reading/opening 图像没有错误，您可以看到元组中的每个项目（索引 0）都是 pathlib 模块的 WindowsPath 对象。所以，这有效：

遍历此列表无效，无法找到图像，您可以看到列表中的每一项（索引0）都是一个WindowsPath，指向pathlib模块的WindowsPath对象。我希望这个列表与上图中的列表相同：

对我来说，它似乎试图打开一个名为“[WindowsPath('dir1/img1.png')]”的不存在的文件，而不是名为“dir1/img1”的现有文件.png。这似乎源于调用函数 random_list() 然后将该函数的输出附加到列表中。

见下面的代码：

def random_list():
    #set empty list
    combo = []
    #mapping images to probabilities
    for d, p in zip(layers, probabilities):
        #random choice of image given the probability
        ch = choices(d, p)
        #add image path to list
        combo.append(ch)
    #return list in order to add more images, total of 7 loops
    return combo
           
'''
Main method
'''
#makes a list of all .png images in the given directories
layers = [list(Path(directory).glob("*.png")) for directory in ("dir1/", "dir2/", "dir3/", "dir4/", "dir5/", "dir6/", "dir7/")]

#list of probabilities for each image
probabilities =
                [ [0.17, 0.11, 0.15, 0.085, 0.05, 0.235, 0.2],
                 [0.075, 0.6, 0.3, 0.025],
                 [0.075, 0.3, 0.6, 0.025],
                 [0.3, 0.075, 0.6, 0.025],
                 [0.55, 0.35, 0.1],
                 [0.1, 0.55, 0.35],
                 [0.1, 0.35, 0.55] ]

#setting empty list
combinations = []
 
#while combinations is less than 1,111 items:
while len(combinations) < 1111:
    #get random list of traits
    a = random_list()
    #add to list if unique
    if a not in combinations:
        combinations.append(a)


#calling iterative function which layers images from directories and saves them
generate(layers)

错误：

 File "E:\myDir\subDir\imageGeneratorTest.py", line 22, in generate
        layer = Image.open(str(path), "r")
    
      File "C:\Program Files\pkgs\PIL\Image.py", line 2968, in open
        fp = builtins.open(filename, "rb")
    
    FileNotFoundError: [Errno 2] No such file or directory: "[WindowsPath('dir1/img1.png')]"

Answer 1

所以，这对我有用：

while len(genList) < 1111:
    a = random_list()

    #add to list if unique
    if a not in genList:
        genList.append(a)

combinations = list([str(c) for c in lst] for lst in genList)

然后用这一行从我的迭代函数中的字符串中取出垃圾：

path = (path.replace("[WindowsPath('", "")).replace("')]", "")

FileNotFoundError - 从 WindowsPath 对象打开图像时遇到问题

FileNotFoundError - Trouble opening an image from WindowsPath object

python

random

file-not-found

nested-lists

pathlib