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How to encrypt a PDF with a password using PythonReady Python script: takes a regular PDF and creates a password-protected copy.
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Library installationpip install PyPDF2
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Codefrom __future__ import annotations
from pathlib import Path
from typing import Union
from PyPDF2 import PdfReader, PdfWriter
PDFPath = Union[str, Path]
def encrypt_pdf(input_path: PDFPath, output_path: PDFPath, password: str) -> Path:
"""
Encrypts a PDF file with a password and saves it to output_path.
Returns the path to the encrypted file.
"""
in_path = Path(input_path)
out_path = Path(output_path)
reader = PdfReader(in_path)
writer = PdfWriter()
for page in reader.pages:
writer.add_page(page)
writer.encrypt(password)
with out_path.open("wb") as f:
writer.write(f)
return out_path
def encrypt_with_suffix(input_path: PDFPath, password: str, suffix: str = "_encrypted") -> Path:
"""
Creates an encrypted copy next to the original file.
For example: secret.pdf → secret_encrypted.pdf
"""
in_path = Path(input_path)
output_path = in_path.with_name(f"{in_path.stem}{suffix}{in_path.suffix}")
return encrypt_pdf(in_path, output_path, password)
if __name__ == "__main__":
pdf_file = "secret.pdf"
pdf_password = "pythontoday"
encrypted_path = encrypt_with_suffix(pdf_file, pdf_password)
print(f"Encrypted file created: {encrypted_path}")
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Where it will be useful🟢send a document to a client with the password via a separate channel;
🟢store important PDFs in encrypted form;
🟢integrate encryption into your service/bot/admin panel.
#python #code #tipsandtricks
https://t.me/DataScience4 🌟
