Before deploying any script, ensure:
| Criterion | Verification Method |
|-----------|---------------------|
| Extractable text | pypdf.PdfReader().pages[0].extract_text() returns readable Khmer |
| Correct subscripts | Word "ព្រះ" shows as consonant + subscript ro + vowel. |
| Copy-paste from Adobe | Paste into Notepad – order preserved. |
| Searchable (Ctrl+F) | Find "សាលា" highlights correctly. |
| No missing characters | All 32+ Khmer consonants visible. |
Note: Only run this on explicitly allowed content (e.g., Creative Commons or public domain). python khmer pdf verified
import unicodedatadef validate_khmer_text(text): """ Returns dict with validation metrics """ khmer_chars = [c for c in text if '\u1780' <= c <= '\u17FF'] khmer_diacritics = [c for c in text if '\u17B0' <= c <= '\u17D3']
# Check for isolated diacritics (invalid) invalid = any(c in khmer_diacritics and (text[i-1] < '\u1780' or text[i-1] > '\u17FF') for i, c in enumerate(text)) # Normalization: Khmer requires NFC form normalized = unicodedata.normalize('NFC', text) return 'total_khmer_chars': len(khmer_chars), 'diacritic_count': len(khmer_diacritics), 'has_isolated_diacritics': invalid, 'normalized_text': normalized
If you are looking for a PDF book or tutorial to learn Python in Khmer, here are the most reliable sources to check:
Note: Always verify the source of the PDF to ensure it doesn't contain malware, especially if it is a direct download link from an unverified website.
import pdfplumber
from PIL import Image
import pytesseract
# Open the PDF file
with pdfplumber.open("path/to/your/pdf_file.pdf") as pdf:
# Iterate through the pages
for page in pdf.pages:
# Extract text
text = page.extract_text()
print(text)
# For scanned PDFs or images
image_path = "path/to/image.png"
text = pytesseract.image_to_string(Image.open(image_path), lang='km')
print(text)
import fitz # PyMuPDF
doc = fitz.open("khmer_sample.pdf")
text = ""
for page in doc:
text += page.get_text()
print(text)
Before diving into code, we must address a critical issue. Khmer script (ភាសាខ្មែរ) has unique typographical features: Before deploying any script, ensure: | Criterion |
Many Python PDF libraries claim to support Unicode, but unverified libraries often produce:
A "verified" solution means the library has been tested against actual Khmer text in a real PDF viewer (like Adobe Acrobat or Chromium).