humps

0.2.2 verified Mon Apr 27 auth: no python maintenance

humps is a Python library for converting strings between camelCase, snake_case, PascalCase, and other cases. The current version is 0.2.2. It has a low release cadence; the last release was in 2017.

pip install humps

Common errors

error AttributeError: module 'humps' has no attribute 'camel' ↓

cause Importing from humps.camel (old pattern) after v0.2.2, or a misspelled module name.

fix

Use 'from humps import camelize' or ensure you have the latest version (>=0.2.2).

error TypeError: expected string or bytes-like object ↓

cause Passing a non-string (e.g., integer, dict) to humps functions.

fix

Ensure input is a string. For dict conversion, use loops or the humps.main.convert function.

Warnings

gotcha humps only works on single strings, not on dict keys or nested structures. Use humps.main.convert for dict conversion. ↓

fix For dict conversion, use humps.camelize or see the main module. Note that automatic dict key conversion is limited.

gotcha humps does not preserve leading or trailing underscores in snake_case conversion (e.g., '_private' becomes 'Private'). ↓

fix Manually handle underscore preservation if needed.

deprecated The old import path 'from humps.camel import case' is deprecated since v0.2.2. ↓

fix Use 'from humps import camelize' instead.

Imports

camelize
wrong
```
from humps import camel
```
correct
```
from humps import camelize
```
Old import path from humps.camel is deprecated; use humps.camelize directly

decamelize

wrong

from humps import decamelize

correct

from humps import decamelize

No common wrong import

pascalize

wrong

from humps import pascalize

correct

from humps import pascalize

No common wrong import

Quickstart

Basic usage: convert strings between cases.

from humps import camelize, decamelize, pascalize

# Convert snake_case to camelCase
print(camelize('hello_world'))  # 'helloWorld'

# Convert camelCase to snake_case
print(decamelize('helloWorld'))  # 'hello_world'

# Convert snake_case to PascalCase
print(pascalize('hello_world'))  # 'HelloWorld'