{"id":9451,"library":"alibabacloud-darabonba-string","title":"Alibaba Cloud Darabonba String Library","description":"The alibabacloud-darabonba-string library provides a collection of string utility functions for Python, designed to be used within the Alibaba Cloud Darabonba framework. It offers functionalities like byte length calculation, type checking, and string conversions. The current version is 0.0.4. As part of the Darabonba ecosystem, it follows an active release cadence, often aligned with broader Alibaba Cloud SDK updates.","status":"active","version":"0.0.4","language":"en","source_language":"en","source_url":"https://github.com/aliyun/darabonba-string","tags":["alibaba","cloud","string","utility","darabonba","aliyun"],"install":[{"cmd":"pip install alibabacloud-darabonba-string","lang":"bash","label":"Install latest version"}],"dependencies":[],"imports":[{"symbol":"Client","correct":"from alibabacloud_darabonba_string.client import Client"}],"quickstart":{"code":"from alibabacloud_darabonba_string.client import Client\n\n# Calculate byte length of a string (UTF-8)\ntext_en = \"Hello World\"\nbyte_length_en = Client.byte_len(text_en)\nprint(f\"'{(text_en)}' byte length (UTF-8): {byte_length_en}\")\n\ntext_zh = \"你好世界\"\nbyte_length_zh = Client.byte_len(text_zh)\nprint(f\"'{(text_zh)}' byte length (UTF-8): {byte_length_zh}\")\n\n# Check if a variable is a string\nis_str_true = Client.is_string(\"test\")\nis_str_false = Client.is_string(123)\nprint(f\"'test' is string: {is_str_true}\")\nprint(f\"123 is string: {is_str_false}\")\n\n# Convert to string\nconverted_num = Client.to_string(456)\nprint(f\"Converted number to string: {converted_num}, type: {type(converted_num)}\")","lang":"python","description":"This example demonstrates how to use `Client.byte_len` to get the UTF-8 byte length of strings, `Client.is_string` to check types, and `Client.to_string` for type conversion. All utility methods are static methods of the `Client` class."},"warnings":[{"fix":"Call methods directly on the class, e.g., `Client.byte_len('string')` instead of `Client().byte_len('string')`.","message":"The `Client` class contains only static methods. Do not instantiate `Client()` as it will result in `AttributeError` when trying to call methods.","severity":"gotcha","affected_versions":"0.0.1 - current"},{"fix":"Explicitly encode your strings to UTF-8 or use Python's built-in string methods if specific encoding handling is required.","message":"Methods like `byte_len` are designed to work with UTF-8 encoding by default. If you are handling strings in different encodings, ensure you convert them appropriately before passing them to these utilities.","severity":"gotcha","affected_versions":"0.0.1 - current"},{"fix":"Pin your dependency to an exact version (`alibabacloud-darabonba-string==0.0.4`) and carefully review changelogs when upgrading.","message":"As a library in early development (version 0.0.x), the API may not be stable. Expect potential breaking changes in minor releases (e.g., 0.1.0, 0.2.0) before a 1.0.0 release is achieved.","severity":"breaking","affected_versions":"0.0.1 - current"}],"env_vars":null,"last_verified":"2026-04-17T00:00:00.000Z","next_check":"2026-07-16T00:00:00.000Z","problems":[{"fix":"Remove the instantiation parentheses. Use `Client.byte_len('some_string')` instead of `Client().byte_len('some_string')`.","cause":"You are attempting to call a static method on an *instance* of the `Client` class, but all methods are designed to be called directly on the class itself.","error":"AttributeError: 'Client' object has no attribute 'byte_len'"},{"fix":"Ensure the package is installed by running `pip install alibabacloud-darabonba-string`. Verify your virtual environment is active if applicable.","cause":"The `alibabacloud-darabonba-string` package is either not installed in your current Python environment, or there is a typo in the import statement.","error":"ModuleNotFoundError: No module named 'alibabacloud_darabonba_string'"},{"fix":"Ensure that the arguments passed to string utility methods are indeed strings. Use `Client.to_string()` to explicitly convert non-string types if necessary, e.g., `Client.byte_len(Client.to_string(123))`.","cause":"You passed a non-string type (like an integer or list) to a utility method that expects a string argument.","error":"TypeError: argument of type 'int' is not iterable"}]}