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。

parser.add_argument('--cfg', type=str, default='', help='model.yaml path')

The "parser.add_argument" method adds an argument to the command-line parser. In this case, the argument is '--cfg', which specifies the path to a model.yaml file.

The "type=str" argument specifies that the value of the argument should be a string. The "default=''" argument specifies that if the argument is not provided on the command line, its default value should be an empty string.

The "help" argument provides a brief description of what the argument does, which is to specify the path to the model.yaml file.