FTL-Extract 0.7.0

Extracts FTL files from a directory and outputs them to a directory

FTL-Extract

Description

FTL-Extract is a Python package that extracts Fluent keys from .py files and generates a .ftl file with extracted keys.

---

Installation

Use the package manager pip to install FTL-Extract.

$ pip install FTL-Extract

Or use modern tool like UV to install FTL-Extract.

$ uv add --dev FTL-Extract

---

Usage

First of all, you should create locales directory in your project.

$ mkdir project_path/locales

Then, you can use the following command to extract keys from your code.

$ ftl_extract project_path/code_path project_path/locales

By default, FTL-Extract will create a directory named en and put all keys into _default.ftl file.

In some cases, you may want to extract keys to specific .ftl files. So, there is new keyword argument _path in i18n.get and i18n.<key>.

# Before
i18n.get("key-1", arg1="value1", arg2="value2")

# After
i18n.get("key-1", arg1="value1", arg2="value2", _path="dir/ftl_file.ftl")

# Also
i18n.key_1(arg1="value1", arg2="value2", _path="dir/ftl_file.ftl")

# Or
i18n.some.key_1(arg1="value1", arg2="value2", _path="dir/ftl_file.ftl")

---

💁‍♂️ Explanation of the ftl-extractor command

$ ftl_extract project_path/code_path project_path/locales

• project_path/code_path - path to the project directory where the code is located.
• project_path/locales - path to the project directory where the .ftl files will be located.

📚 Additional arguments

• -l or --language - add a new language to the project.
• -k or --i18n_keys - add additional i18n keys to the extractor.
• --ignore-attributes - ignore specific attributes of the i18n.* like i18n.set_locale.
• -a or --expand-ignore-attributes - add more attributes to ignore to the default list.
• --ignore-kwargs - ignore specific kwargs of the i18n_keys like when=... in aiogram_dialog.I18nFormat(..., when=...).
• --comment-junks - comments errored translations in the .ftl file.
• --default-ftl-file - specify the default .ftl file name.
• --comment-keys-mode - specify the comment keys mode. It will comment keys that are not used in the code or print warnings about them. Available modes: comment, warn.
• --dry-run - run the command without making any changes to the files.
• -v or --verbose - print additional information about the process.

---

FAQ

❓ - How to add more languages to the project ?

# Here we add 3 languages: English, Ukrainian and Polish
$ ftl_extract project_path/code_path project_path/locales -l en -l uk -l pl

❓ - How to detect another i18n keys like LazyProxy or L ?

# Here we extract ftl keys from i18n-keys like `i18n`, `LF`, `LazyProxy` and `L`
$ ftl_extract project_path/code_path project_path/locales -k i18n -k LF -k LazyProxy -k L

---

How I use FTL-Extract in most of my projects

$ ftl_extract \
  './app/bot' \
  './app/bot/locales' \
  -l 'en' \
  -l 'uk' \
  -k 'i18n' \
  -k 'L' \
  -k 'LF' \
  -k 'LazyProxy' \
  -a 'core' \
  --comment-junks \
  --comment-keys-mode 'warn' \
  --verbose

---

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

Please make sure to update tests as appropriate.