References to write the custom checks

[dineshvelmuruga]

Is your feature request related to a problem? Please describe. A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] How to write the custom constraints in python? Describe the solution you'd like A clear and concise description of what you want to happen. References to write the custom constraints in python? Describe alternatives you've considered A clear and concise description of any alternative solutions or features you've considered. References to write the custom constraints in python? Additional context Add any other context or screenshots about the feature request here. References to write the custom constraints in python?

[chenliu0831]

Marked as a feature request per this TODO - https://github.com/awslabs/python-deequ/blob/87ca6d5b3b30ea86784d894ea26d8a7ddafd910b/pydeequ/checks.py#L8