cli-tools-by-oleksa 1.0.0

Lightweight helper toolkit for building small CLI (command-line) applications in Python.

cli_tools_by_oleksa

Lightweight helper toolkit for building small CLI (command-line) applications in Python.

The library simplifies common CLI tasks such as:

• handling user input,
• validation and conversion,
• safe execution and retry loops,
• formatted console output.

It is ideal for educational scripts, training exercises, small utilities, and simple CLI apps where readability and robustness matter more than complex frameworks.

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✨ Features

• safe_run — context manager for safe execution with optional debug output
• try_until_ok — repeat an operation until success, catching specified exceptions
• valid_input — flexible input validation (regex + custom validator + conversion)
• choose_from_list — select an item from a list by number or text
• parse_list — split text into a list and optionally convert elements
• 🖨print_iterable / print_zipped_iterable — neat console formatting of lists or zipped items
• safe_int / safe_float — convert strings to numbers safely without raising exceptions
• Predefined regex patterns — integers, floats, dates, usernames, emails, multi-item lists, etc.
• Validator factories — range checks, list membership, numerical comparisons (>, >=, <, <=)

Zero external dependencies — just Python 3.10+.

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📦 Installation

pip install --upgrade --index-url https://test.pypi.org/simple/ --no-deps cli_tools_by_oleksa

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🛠️ Usage Example

from cli_tools import safe_run, try_until_ok, valid_input, choose_from_list, print_iterable, print_zipped_iterable
from cli_tools.validators import is_in_range

with safe_run(debug=True, exit_on_error=False):
    name = valid_input("Enter your name: ", converter= lambda x: x.strip().capitalize())
    print(f"Hello, {name}!")
    age = try_until_ok(
        valid_input,
        prompt="Enter your age: ",
        validator=is_in_range(1, 100),
        converter=int,
        on_exception="Be serious :)"
    )

    options = ["A", "B", "C"]
    print_iterable(options, item_pattern='{}', join_by=' | ', start='[ ', end=' ]')
    option = choose_from_list(options, by_number=False, prompt='Choose: ')

    data = {
        'name': name,
        'age': age,
        'option': option,
    }

    print_zipped_iterable(data.items(), '| {: <10}|{: >10} |',
                          join_by='\n'+'—'*25+'\n', start='_'*25+'\n', end='\n'+'‾'*25)

Output:

Enter your name:     oLEkSa
Hello, Oleksa!
Enter your age: 1000
Be serious :)
Enter your age: 19
[ A | B | C ]
Choose: D
Incorrect option!
Choose: A
_________________________
| name      |    Oleksa |
—————————————————————————
| age       |        19 |
—————————————————————————
| option    |         A |
‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾

Process finished with exit code 0