Update app.py

app.py

@@ -228,6 +228,7 @@ def pdf2txt(docs):
             if file_extension.lower() in ['py', 'txt', 'html', 'htm', 'xml', 'json']:
                 text += file.getvalue().decode('utf-8')
             elif file_extension.lower() == 'pdf':
+                from PyPDF2 import PdfFileReader
                 pdf = PdfFileReader(BytesIO(file.getvalue()))
                 for page in range(pdf.getNumPages()):
                     text += pdf.getPage(page).extractText()