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Data pipelines & processing

ETL-style flows, batch transforms, validation, and moving data between formats.

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Data pipelines & processing easy

How to Hash Email Addresses in a PII Masking Pipeline in Python

Replaces every email address in a text string with its SHA-256 hash to protect personally identifiable information (PII).

pii hashing sha256
Python 
import hashlib
import re

def hash_email(email: str) -> str:
    """Mask an email address by hashing it with SHA-256."""
    normalized = email.strip().lower()
    return hashlib.sha256(normalized.encode("utf-8")).hexdigest()

def mask_pii_emails(text: str) -> str:
    """Replace all email addresses in text with their…
14 0 Open

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