ez-validate 0.1.0

Builder-like data validation package

Ez Validate

Simple package for data validation.

Examples:

Valid

var = 10.0
ValidateThat(var).is_float().less_than(12.4).greater_than(9.2)

Invalid

var = 5.0
ValidateThat(var).is_float().less_than(12.4).greater_than(9.2)

This example will raise ValidationError with the following message:

"Untitled var" must be greater than 9.2 but is 5.0

You can change the the name of variable by providing it in ValidateThat constractor:

ValidateThat(var, name='Your name').is_float().less_than(12.4).greater_than(9.2)

Your name must be greater than 9.2 but is 5.0

To handle the error use try except clause:

try:
	...
except ValidationError as e:
	...

Multiple conditions

And condition:

ValidateThat(var).firts_condition().second_condition().third_condition()

Or condition:

either(
	lambda: ValidateThat(var).first_condition(),
	lambda: ValidateThat(var).second_condition(),
	lambda: ValidateThat(var).third_condition()
)

You can make combination of and and or conditions:

var = 1.5
either(
	lambda: ValidateThat(var).is_float().less_than(3.0).greater_than(0.0),
	lambda: ValidateThat(var).is_int().less_than(3).greater_than(0),
	lambda: ValidateThat(var).is_none()
)

That would mean var must be:

• float and greater than 0 and less than 3.0
• or
• int and greater than 0 and less than 3
• or
• None