Dynamic File Generator

This Python script generates arbitrary, valid files in various formats (DOCX, XLSX, PPTX, PDF, PST, ZIP) to a specified size. It ensures each file is correctly structured so that it opens in its respective application.

Supported Formats

• DOCX (Microsoft Word)
• XLSX (Microsoft Excel)
• PPTX (Microsoft PowerPoint)
• PDF (any PDF reader)
• PST (Outlook Personal Storage Table)
• ZIP (Archive)

Requirements

All dependencies are listed in requirements.txt. You can install them in a virtual environment:

python -m venv venv
# macOS/Linux
source venv/bin/activate
# Windows
powershell -ep bypass
venv\Scripts\activate

pip install -r requirements.txt

• Ensure you have Python 3.7 and above

Usage

usage: script.py [-h] [-f {docx,xlsx,pptx,pdf,pst,zip}] size [output]

positional arguments:
  size            target size (e.g. 150KB, 2.5MB, or 10 for 10MB)
  output          optional filename (default: <format>_<size>.<ext>)

options:
  -h, --help      show this help message and exit
  -f, --format    file format to produce (docx, xlsx, pptx, pdf, pst, zip) (default: docx)

Examples

Generating in KB

# 100 KB Word document
python script.py 100KB -f docx small.docx

# 512 KB PDF
python script.py 512KB -f pdf report.pdf

# 8 KB ZIP archive
python script.py 8KB -f zip archive.zip

Generating in MB

# 1.5 MB Excel workbook
python script.py 1.5MB -f xlsx workbook.xlsx

# 10 MB PowerPoint deck (default name: pptx_10.pptx)
python script.py 10 -f pptx

# 5 MB Outlook PST mailbox
python script.py 5MB -f pst mailbox.pst

Notes

• PST generation requires Aspose.Email-for-Python-via-NET and a Windows environment.
• All other formats work cross-platform.