Requirements

• Python 3.6+

Installation & Upgrade

pip install fastvalidate --upgrade

Dictionary Validation

from fastvalidate import Validator

validator = Validator({
    'first_name': 'Mo',
    'last_name': None,
    'age': '5',
    'email': 'mojtabaa.hn@gmail',
    'website': 'yup',
    'languages': ['en', 'fa'],
}, {
    'first_name': 'required|min:3',
    'last_name': 'required|min:3',
    'age': 'required|numeric|gt:10|lt:120',
    'email': 'required|email',
    'website': 'required|url',
    'languages': 'required|list|min:3'
})

validator.validate().errors()
# {
#     'first_name': 'Field length must be at least 3 characters',
#     'last_name': 'Field is required',
#     'age': 'Field must be greater than 10',
#     'email': 'Field must be email',
#     'website': 'Field must be url',
#     'languages': 'Field must have at least 3 items'
# }

Pydantic Validation

from fastvalidate import BaseModel


class User(BaseModel):
    email: str
    website: str

    class Config:
        rules = dict(
            email='required|email|min:3',
            website='required|url|min:3'
        )


user = User(email='whatever', website='whoever')
# ValidationError
# [
#     dict(loc=('email',), msg='Field must be email', type='value_error'),
#     dict(loc=('website',), msg='Field must be url', type='value_error')
# ]

Available Rules

Type	Applicable On	signature
Boolean	string, boolean	bool, boolean
Numeric	string, integer	numeric, int, integer
List	string(json), list	list, array
Dictionary	string(json), dict	dict
Email	string	email
Password	string	password
RegEx	string	regex:<pattern>
URL	string	url
Length	string, integer, float, list, dict	len:<length>, length:<length>
Min	string, integer, float, list, dict	min:<threshold>
Max	string, integer, float, list, dict	max:<threshold>
Choice	string	choice:<x>,<y>,<z> in:<x>,<y>,<z>
Greater Than	int	gt:<threshold>
Greater Than Equal	int	gte:<threshold>
Less Than	int	lt:<threshold>
Less Than Equal	int	lte:<threshold>
Alpha	string	alpha
Alpha Numeric	string	alpha_num,alpha_numeric
Alpha Num Dash	string	alpha_dash
Date	string	date
UUID	string	uuid
IPV4	string	ipv4
IPV6	string	ipv6
IP	string	ip
Mac Address	string	mac,mac_address

Testing

# install pytest
pip install pytest

# run tests
python -m pytest