parse_known_args
时间: 2023-09-19 15:05:05 浏览: 41
The `parse_known_args` method is a function in the `argparse` module of Python. It is used to parse command-line arguments passed to a Python script.
The `parse_known_args` method is similar to the `parse_args` method, but it allows for unknown arguments to be passed without throwing an error. It returns a tuple containing two values: a Namespace object containing the parsed arguments, and a list of any remaining arguments that were not recognized by the parser.
Here is an example of how to use `parse_known_args`:
```
import argparse
parser = argparse.ArgumentParser()
parser.add_argument('--foo', help='foo help')
parser.add_argument('--bar', help='bar help')
args, unknown = parser.parse_known_args()
print(args)
print(unknown)
```
In this example, we create an `ArgumentParser` object and add two arguments to it (`--foo` and `--bar`). We then call `parse_known_args` to parse the command-line arguments passed to the script. The `args` variable contains the parsed arguments (as a Namespace object), and the `unknown` variable contains any remaining arguments that were not recognized by the parser.
Note that `parse_known_args` is useful when you have a script that accepts multiple commands, and each command may have its own set of arguments. In such cases, you can use `parse_known_args` to parse the arguments for the main script, and then pass any remaining arguments to a separate parser for the specific command.