path1 = os.path.join(path,filename_img)

`os.path.join()` 方法在不同的操作系统上以正确的方式拼接路径，并返回组合的路径。可以将文件名和路径名组合为一个完整的路径。例如，当`path="C:/User"`且`filename_img="test.jpg"`时，`os.path.join(path, filename_img)`返回的结果就是`"C:/User/test.jpg"`。

下面是一个简单的例子说明如何使用`os.path.join()`组合路径和文件名：[^1]

import os

path = "/usr/local/"
filename_img = "test.jpg"

full_path = os.path.join(path, filename_img)
print(full_path) # 输出: /usr/local/test.jpg

相关问题

将下面代码简洁化：def split_dataset(img_path, target_folder_path, output_path): filename = [] total_imgs = os.listdir(img_path) #for root, dirs, files in os.walk(img_path): for img in total_imgs: filename.append(img) np.random.shuffle(filename) train = filename[:int(len(filename) * 0.9)] test = filename[int(len(filename) * 0.9):] out_images = os.path.join(output_path, 'imgs') if not os.path.exists(out_images): os.makedirs(out_images) out_images_train = os.path.join(out_images, 'training') if not os.path.exists(out_images_train): os.makedirs(out_images_train) out_images_test = os.path.join(out_images, 'test') if not os.path.exists(out_images_test): os.makedirs(out_images_test) out_annotations = os.path.join(output_path, 'annotations') if not os.path.exists(out_annotations): os.makedirs(out_annotations) out_annotations_train = os.path.join(out_annotations, 'training') if not os.path.exists(out_annotations_train): os.makedirs(out_annotations_train) out_annotations_test = os.path.join(out_annotations, 'test') if not os.path.exists(out_annotations_test): os.makedirs(out_annotations_test) for i in train: print(os.path.join(img_path, i)) print(os.path.join(out_images_train, i)) shutil.copyfile(os.path.join(img_path, i), os.path.join(out_images_train, i)) annotations_name = "gt_" + i[:-3] + 'txt' shutil.copyfile(os.path.join(target_folder_path, annotations_name), os.path.join(out_annotations_train, annotations_name)) for i in test: shutil.copyfile(os.path.join(img_path, i), os.path.join(out_images_test, i)) annotations_name = "gt_" + i[:-3] + 'txt' shutil.copyfile(os.path.join(target_folder_path, annotations_name), os.path.join(out_annotations_test, annotations_name))

def split_dataset(img_path, target_folder_path, output_path):
filename = os.listdir(img_path)
np.random.shuffle(filename)

train = filename[:int(len(filename) * 0.9)]
test = filename[int(len(filename) * 0.9):]

out_images = os.path.join(output_path, 'imgs')
os.makedirs(out_images, exist_ok=True)

out_images_train = os.path.join(out_images, 'training')
os.makedirs(out_images_train, exist_ok=True)

out_images_test = os.path.join(out_images, 'test')
os.makedirs(out_images_test, exist_ok=True)

out_annotations = os.path.join(output_path, 'annotations')
os.makedirs(out_annotations, exist_ok=True)

out_annotations_train = os.path.join(out_annotations, 'training')
os.makedirs(out_annotations_train, exist_ok=True)

out_annotations_test = os.path.join(out_annotations, 'test')
os.makedirs(out_annotations_test, exist_ok=True)

for i in train:
img_src = os.path.join(img_path, i)
img_dst = os.path.join(out_images_train, i)
shutil.copyfile(img_src, img_dst)

annotations_name = "gt_" + i[:-3] + 'txt'
annotations_src = os.path.join(target_folder_path, annotations_name)
annotations_dst = os.path.join(out_annotations_train, annotations_name)
shutil.copyfile(annotations_src, annotations_dst)

for i in test:
img_src = os.path.join(img_path, i)
img_dst = os.path.join(out_images_test, i)
shutil.copyfile(img_src, img_dst)

annotations_name = "gt_" + i[:-3] + 'txt'
annotations_src = os.path.join(target_folder_path, annotations_name)
annotations_dst = os.path.join(out_annotations_test, annotations_name)
shutil.copyfile(annotations_src, annotations_dst)

img_path = os.path.join(img_dir, filename)

这行代码的作用是将一个文件名拼接到一个文件夹路径中，生成完整的文件路径。

具体来说，os.path.join() 方法会将多个路径组合成一个完整的路径，它会根据操作系统的不同自动选择使用正确的路径分隔符。在这里，我们将文件夹路径 img_dir 和文件名 filename 组合起来，生成完整的图片路径 img_path。这个路径可以用于读取或写入图片文件。