The Cliopts Library is a Python library designed to simplify the process of parsing command-line arguments. It provides a straightforward and intuitive API, reducing the amount of code required for CLI argument parsing.
To install the Cliopts Library, run the following command in your terminal (cmd, bash, PowerShell, etc.):
pip install cliopts
To use the library in your code, follow these steps:
-
Import the
CliArguments
class from thecliopts
module:from cliopts import CliArguments
-
Create an instance of
CliArguments
and pass a list of argument names or a dictionary of argument names and their shorthand notations, along with optional parameters such asoptions_desc
andversion
.Using a list of options:
args = CliArguments( options=["filename", "count", "verbose"], options_desc={ "filename": "Specify the filename", "count": "Specify the count", "verbose": "Enable verbose output" }, version="v1.0.0" )
Using a dictionary of options with shorthand notations:
args = CliArguments( options={ "filename": "f", "count": "c", "verbose": "v" }, options_desc={ "filename": "Specify the filename", "count": "Specify the count", "verbose": "Enable verbose output" }, version="v1.0.0" )
-
Access the parsed command-line arguments as a dictionary using the
to_dict()
method:print(args.to_dict())
The
to_dict()
method returns a dictionary containing the parsed arguments. -
Run your Python script and pass command-line arguments using the specified options and their shorthand notations:
py test.py --filename="filename.txt" --count=5 --verbose=True py test.py -f "filename.txt" -c 5 -v True
Replace
test.py
with the name of your script file andfilename.txt
with the desired value for the argument.
Let's consider an example to illustrate how to use the Cliopts Library. Suppose we are creating a Python script that takes a filename, count, and a verbose flag as input from the command line.
In script.py
file:
from cliopts import CliArguments
# Define the desired arguments: filename, count, verbose
args = CliArguments(
options={
"filename": "f",
"count": "c",
"verbose": "v"
},
options_desc={
"filename": "Specify the filename",
"count": "Specify the count",
"verbose": "Enable verbose output"
},
version="v1.0.0"
)
print(args.to_dict())
In the command line:
py script.py --filename='/files/filename.txt' --count=5 --verbose=True
py script.py -f '/files/filename.txt' -c 5 -v True
The output of args.to_dict()
will be:
{
"filename": "/files/filename.txt",
"count": 5,
"verbose": True
}
- Type:
Iterable[str] | dict[str, str]
- Description: A list or dictionary of command-line options. If using a dictionary, the keys are the full option names and the values are their shorthand notations.
- Type:
dict[str, str]
- Optional: Yes
- Description: A dictionary with descriptions for each option. Defaults to an empty dictionary.
- Type:
str
- Optional: Yes
- Description: The version of the program. Defaults to
None
.
- Type:
(dict[str, str]) -> Any
- Optional: Yes
- Description: A function to display help information. This function takes
options_desc
as its argument. If not provided, the default help function is triggered utilizingoptions_desc
.
- Type:
bool
- Optional: Yes
- Description: Whether to throw an error on invalid arguments. Defaults to
True
.
- Type:
str
- Optional: Yes
- Description: The name of the program. Defaults to
"python-program"
.
- Type:
str
- Optional: Yes
- Description: The description of the program. Defaults to
None
.
If the --help
flag is used, the default help function displays the following information:
Usage: python-program [options]
Options:
filename : Specify the filename
count : Specify the count
verbose : Enable verbose output
--version : Show version
If you want your script to return a version number when prompted with --version
, you can easily achieve that by passing a version string as the version
parameter when creating an instance of CliArguments
.
Example in script.py
file:
from cliopts import CliArguments
args = CliArguments(
options=["filename", "count", "verbose"],
version="v1.0.0"
)
You can now check the script version using the following command:
py script.py --version
The output will be v1.0.0
, matching the version parameter.
For any inquiries or assistance, you can contact the developer at [email protected]. Feel free to reach out with any questions or feedback you may have.