Conversion Utilities

Smarter.common.utils.conversion

Case conversion utility functions for the Smarter framework.

This module provides functions to convert between different naming conventions, such as camelCase, PascalCase, and snake_case, for strings, dictionary keys, and lists. These utilities assure consistent treatment to/from various case formats.

Functions

  • to_snake_case(obj): Converts camelCase or PascalCase strings (or class/type objects) to snake_case.

  • to_camel_case(data, convert_values=False): Converts snake_case strings, dict keys, or lists to camelCase.

Example

from smarter.common.utils import to_snake_case, to_snake_case, to_camel_case

print(to_snake_case("UserProfile"))  # Output: user_profile
print(to_snake_case("userName"))     # Output: user_name
print(to_camel_case("user_name"))    # Output: userName
smarter.common.utils.conversion.ConvertibleCaseType

A type alias representing data that can be converted between different case.

formats. This includes strings, dictionaries with string keys, lists of such elements, or any object.

alias of str | dict[str, object] | list[object] | object

smarter.common.utils.conversion.to_camel_case(data, convert_values=False, is_recursive=False)[source]

Convert snake_case strings, dictionary keys, or lists to camelCase format.

Return type:

Any

Parameters:

  • data (str | dict | list) – The input to convert. Can be a string, a dictionary (with snake_case keys), or a list containing strings or dictionaries.

  • convert_values (bool, optional) – If True, string values within dictionaries and lists are also converted to camelCase. Default is False.

Returns:

The converted data in camelCase format. The return type matches the input type (str, dict, or list).

Return type:

Any

Notes

  • For dictionaries, only keys are converted by default. If convert_values is True, string values are also converted.

  • Nested dictionaries and lists are processed recursively.

  • If the input is not a string, dictionary, or list, the original value is returned.

Raises:

SmarterValueError – If the input is not a string, dictionary, or list, and cannot be converted.

Examples

>>> from smarter.common.utils import to_camel_case

# Convert a string >>> to_camel_case(“user_name”) ‘userName’

# Convert a dictionary >>> data = { … “user_name”: “alice”, … “user_profile”: { … “first_name”: “Alice”, … “last_name”: “Smith” … } … } >>> to_camel_case(data) {‘userName’: ‘alice’, ‘userProfile’: {‘firstName’: ‘Alice’, ‘lastName’: ‘Smith’}}

# Convert a list of strings >>> to_camel_case([“first_name”, “last_name”]) [‘firstName’, ‘lastName’]

# Convert values as well >>> data = {“user_name”: “first_name”} >>> to_camel_case(data, convert_values=True) {‘userName’: ‘firstName’}

smarter.common.utils.conversion.to_snake_case(data, convert_values=False)[source]

Convert camelCase or PascalCase strings, dictionary keys, or lists to snake_case format.

Return type:

Any

Parameters:

  • data (str | dict | list) – The input to convert. Can be a string, a dictionary (with camelCase or PascalCase keys), or a list containing strings or dictionaries.

  • convert_values (bool, optional) – If True, string values within dictionaries and lists are also converted to snake_case. Default is False.

Returns:

The converted data in snake_case format. The return type matches the input type (str, dict, or list).

Return type:

Any

Notes

  • For dictionaries, only keys are converted by default. If convert_values is True, string values are also converted.

  • Spaces in keys are replaced with underscores.

  • Multiple consecutive underscores are collapsed into a single underscore.

  • Nested dictionaries and lists are processed recursively.

  • If the input is not a string, dictionary, or list, the function attempts to convert its string representation.

Raises:

SmarterValueError – If the input is not a string, dictionary, or list, and cannot be converted.

Examples

>>> from smarter.common.utils import to_snake_case

# Convert a string >>> to_snake_case(“userName”) ‘user_name’

# Convert a dictionary >>> data = { … “userName”: “alice”, … “userProfile”: { … “firstName”: “Alice”, … “lastName”: “Smith” … } … } >>> to_snake_case(data) {‘user_name’: ‘alice’, ‘user_profile’: {‘first_name’: ‘Alice’, ‘last_name’: ‘Smith’}}

# Convert a list of strings >>> to_snake_case([“firstName”, “lastName”]) [‘first_name’, ‘last_name’]