parser.add_argument( '--input', type=str, default='0', help='ID of a USB webcam, URL of an IP camera, ' 'or path to an image directory or movie file')这段代码中如何修改input这个参数为一个确定图像目录

要将 `--input` 参数修改为确定的图像目录，只需要将 `type` 参数从 `str` 改为 `pathlib.Path`，并将 `default` 参数设为图像目录的路径即可。修改后的代码如下所示：

import argparse
import pathlib

parser = argparse.ArgumentParser()
parser.add_argument('--input', type=pathlib.Path, default='/path/to/image/directory', help='Path to an image directory')
args = parser.parse_args()

这样，当你运行 Python 脚本时不指定 `--input` 参数时，它将默认使用 `/path/to/image/directory` 作为输入图像目录。你也可以通过在命令行中指定 `--input` 参数来将输入图像目录更改为其他路径。例如：

python my_script.py --input /path/to/other/image/directory

相关问题

arser = argparse.ArgumentParser(description="Run GHCN.") parser.add_argument('--data_path', type=str, default='./data/', help='Input data path') parser.add_argument('--model_path', type=str, default='checkpoint.pt', help='Saved model path.') parser.add_argument('--dataset', type=str, default='Cora', help='Choose a dataset from {Cora, CiteSeer, PubMed}') parser.add_argument('--split', type=str, default='full', help='The type of dataset split {public, full, random}') parser.add_argument('--trim_prob', type=float, default=0.2, help='The probability to trim adj, 0 not trim, 1 trim') parser.add_argument('--seed', type=int, default=123, help='Random seed') parser.add_argument('--epoch', type=int, default=1000, help='Number of epochs to train') parser.add_argument('--lr', type=float, default=0.005, help='Initial learning rate') parser.add_argument('--weight_decay', type=float, default=5e-4, help='Weight decay (L2 norm on parameters)') parser.add_argument('--k', type=int, default=10, help='k-hop aggregation') parser.add_argument('--hidden', type=int, default=64, help='Number of hidden units') parser.add_argument('--dropout', type=float, default=0.7, help='Dropout rate') parser.add_argument('--patience', type=int, default=100, help='How long to wait after last time validation improved') args = parser.parse_args() for arg in vars(args): print('{0} = {1}'.format(arg, getattr(args, arg))) 修改代码要求：如果dataset不等于{Cora, CiteSeer, PubMed}中的任何一项则不打印split

修改后的代码如下：

import argparse

parser = argparse.ArgumentParser(description="Run GHCN.")
parser.add_argument('--data_path', type=str, default='./data/', help='Input data path')
parser.add_argument('--model_path', type=str, default='checkpoint.pt', help='Saved model path.')
parser.add_argument('--dataset', type=str, default='Cora', help='Choose a dataset from {Cora, CiteSeer, PubMed}')
parser.add_argument('--split', type=str, default='full', help='The type of dataset split {public, full, random}')
parser.add_argument('--trim_prob', type=float, default=0.2, help='The probability to trim adj, 0 not trim, 1 trim')
parser.add_argument('--seed', type=int, default=123, help='Random seed')
parser.add_argument('--epoch', type=int, default=1000, help='Number of epochs to train')
parser.add_argument('--lr', type=float, default=0.005, help='Initial learning rate')
parser.add_argument('--weight_decay', type=float, default=5e-4, help='Weight decay (L2 norm on parameters)')
parser.add_argument('--k', type=int, default=10, help='k-hop aggregation')
parser.add_argument('--hidden', type=int, default=64, help='Number of hidden units')
parser.add_argument('--dropout', type=float, default=0.7, help='Dropout rate')
parser.add_argument('--patience', type=int, default=100, help='How long to wait after last time validation improved')

args = parser.parse_args()

if args.dataset in {'Cora', 'CiteSeer', 'PubMed'}:
    for arg in vars(args):
        print('{0} = {1}'.format(arg, getattr(args, arg)))
else:
    print("Invalid dataset! Valid options are {Cora, CiteSeer, PubMed}.")

如果输入的 dataset 不是 {Cora, CiteSeer, PubMed} 中的任何一项，将会输出 "Invalid dataset! Valid options are {Cora, CiteSeer, PubMed}."，否则将会输出各个参数的值。

请帮我翻译每一句代码：def parse_opt(): parser = argparse.ArgumentParser() parser.add_argument('--weights', nargs='+', type=str, default='D://Net//pytorch//yolov5-master//yolov5-master//runs//train//exp3//weights//best.pt', help='model path or triton URL') parser.add_argument('--source', type=str, default=ROOT / 'data/images', help='file/dir/URL/glob/screen/0(webcam)') parser.add_argument('--data', type=str, default=ROOT / 'data/coco128.yaml', help='(optional) dataset.yaml path') parser.add_argument('--imgsz', '--img', '--img-size', nargs='+', type=int, default=[480], help='inference size h,w') parser.add_argument('--conf-thres', type=float, default=0.25, help='confidence threshold') parser.add_argument('--iou-thres', type=float, default=0.45, help='NMS IoU threshold') parser.add_argument('--max-det', type=int, default=1000, help='maximum detections per image') parser.add_argument('--device', default='', help='cuda device, i.e. 0 or 0,1,2,3 or cpu') parser.add_argument('--view-img', action='store_true', help='show results') parser.add_argument('--save-txt', action='store_true', help='save results to *.txt') parser.add_argument('--save-conf', action='store_true', help='save confidences in --save-txt labels') parser.add_argument('--save-crop', action='store_true', help='save cropped prediction boxes') parser.add_argument('--nosave', action='store_true', help='do not save images/videos') parser.add_argument('--classes', nargs='+', type=int, help='filter by class: --classes 0, or --classes 0 2 3') parser.add_argument('--agnostic-nms', action='store_true', help='class-agnostic NMS') parser.add_argument('--augment', action='store_true', help='augmented inference') parser.add_argument('--visualize', action='store_true', help='visualize features')

def parse_opt():
# 定义 argparse 解析器
parser = argparse.ArgumentParser()

# 添加命令行参数
parser.add_argument('--weights', nargs='+', type=str, default='D://Net//pytorch//yolov5-master//yolov5-master//runs//train//exp3//weights//best.pt', help='model path or triton URL')
parser.add_argument('--source', type=str, default=ROOT / 'data/images', help='file/dir/URL/glob/screen/0(webcam)')
parser.add_argument('--data', type=str, default=ROOT / 'data/coco128.yaml', help='(optional) dataset.yaml path')
parser.add_argument('--imgsz', '--img', '--img-size', nargs='+', type=int, default=[480], help='inference size h,w')
parser.add_argument('--conf-thres', type=float, default=0.25, help='confidence threshold')
parser.add_argument('--iou-thres', type=float, default=0.45, help='NMS IoU threshold')
parser.add_argument('--max-det', type=int, default=1000, help='maximum detections per image')
parser.add_argument('--device', default='', help='cuda device, i.e. 0 or 0,1,2,3 or cpu')
parser.add_argument('--view-img', action='store_true', help='show results')
parser.add_argument('--save-txt', action='store_true', help='save results to *.txt')
parser.add_argument('--save-conf', action='store_true', help='save confidences in --save-txt labels')
parser.add_argument('--save-crop', action='store_true', help='save cropped prediction boxes')
parser.add_argument('--nosave', action='store_true', help='do not save images/videos')
parser.add_argument('--classes', nargs='+', type=int, help='filter by class: --classes 0, or --classes 0 2 3')
parser.add_argument('--agnostic-nms', action='store_true', help='class-agnostic NMS')
parser.add_argument('--augment', action='store_true', help='augmented inference')
parser.add_argument('--visualize', action='store_true', help='visualize features')

# 返回解析器
return parser