🐫 Convert strings (and dictionary keys) between snake case, camel case and pascal case in Python. Inspired by Humps for Node
Project description
Convert strings (and dictionary keys) between snake case, camel case and pascal case in Python. Inspired by Humps for Node.
Why
When creating an API, the authors will often use the character casing convention that is idiomatic to their backend language, thus forcing consumers developing in a different language (with different style guidelines) to tolerate inconsistent casing styles, hardcode mappings between the two, or lug around some case conversion utility functions.
While none of these are inherently wrong, it would still be nice to have a dependable solution just a few keystrokes away.
Installation
To install humps, simply use pipenv (or pip, of course):
$ pipenv install pyhumps
Usage
Converting strings
import humps
humps.camelize('jack_in_the_box') # jackInTheBox
humps.decamelize('rubyTuesdays') # ruby_tuesdays
humps.pascalize('red_robin') # RedRobin
Converting dictionary keys
import humps
array = [{'attrOne': 'foo'}, {'attrOne': 'bar'}]
humps.decamelize(array) # [{'attr_one': 'foo'}, {'attr_one': 'bar'}]
array = [{'attr_one': 'foo'}, {'attr_one': 'bar'}]
humps.camelize(array) # [{'attrOne': 'foo'}, {'attrOne': 'bar'}]
array = [{'attr_one': 'foo'}, {'attr_one': 'bar'}]
humps.pascalize(array) # [{'AttrOne': 'foo'}, {'AttrOne': 'bar'}]
Checking character casing
import humps
humps.is_camelcase('illWearYourGranddadsClothes') # True
humps.is_pascalcase('ILookIncredible') # True
humps.is_snakecase('im_in_this_big_ass_coat') # True
humps.is_camelcase('from_that_thrift_shop') # False
humps.is_snakecase('downTheRoad') # False
How personally I use humps
Pythonic Boto3 API Wrapper
# aws.py
import humps
import boto3
def api(service, decamelize=True, *args, **kwargs):
service, func = service.split(':')
client = boto3.client(service)
kwargs = humps.pascalize(kwargs)
response = getattr(client, func)(*args, **kwargs)
return (depascalize(response) if decamelize else response)
api('s3:download_file', bucket='bucket', key='hello.png', filename='hello.png')
Flask-RESTful Adaptive Responses
# I will post a code snippet for this soon. It's a decorator that checks if
# the request arguments were passed as camelcase or snake_case, it then
# rewrites the response to match the consumer's preferred casing style.
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