Pydantic: conbytes: Constrain bytes

‘conbytes’ method is used to constrain bytes. Below table summarizes the arguments of ‘conbytes’ method.

 

Argument	Data type	Description
strip_whitespace	bool = False	removes leading and trailing whitespace
to_lower	bool = False	turns all characters to lowercase
min_length	int = None	minimum length of the byte string
max_length	int = None	maximum length of the byte string

 

Example

class Box(BaseModel):
    id: int
    address: conbytes(to_lower=True, strip_whitespace = True)

 

Find the below working application.

 

conbytes_demo_1.py

 

from pydantic import (
    BaseModel,
    conbytes,
    ValidationError
)

class Box(BaseModel):
    id: int
    address: conbytes(to_lower=True, strip_whitespace = True)

try:
    box1 = Box(id = 1, address='    BANAGALORE, Chodeswari street   ')
    print(box1.json())
except ValidationError as e:
    print(e.json())

Output

{"id": 1, "address": "banagalore, chodeswari street"}

  

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