We migrate legacy Python 2 and old Python 3 codebases to a current Python version: automated conversion where it's safe, manual fixes where it isn't, replacement libraries, and tests that prove behaviour didn't change. Fixed price from $6,000.
What you get
- An inventory of the code and dependencies.
- Conversion, with careful handling of strings, bytes and integer division.
- Replacement libraries for abandoned packages.
- Tests and a staged cut-over.
Good fit if
- You still run Python 2 or an end-of-life Python 3.
- Security scanners flag your runtime.
- You can't install modern libraries.
Closest work we've done
Five-plus years of production Python, including ETL pipelines, scrapers, Django and FastAPI platforms and data processing with Pandas.
How we work
- A free scoping call, then a written fixed-scope quote within 24 hours.
- Working software (or a written report) delivered on the agreed date.
- Full handover: code, documentation, and access to everything. You own it.
Founder-led: Saif Ur Rehman, a senior engineer with 5+ years and 20+ products shipped, does the work himself. See the case studies or book a call.
Frequently asked questions
Can't we just run an automatic converter?
Converters handle the easy part; the risk is in strings, bytes, encodings and changed library behaviour, which need tests and review.
How long does it take?
Depends on size: small services in days, larger systems in weeks.
How much does it cost?
From $6,000, fixed price.