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PyPath
Nederlands

Python for Revit · pyRevit

Become the person at the office who can automate Revit.

PyPath teaches you Python in 12 weeks with one goal: your own pyRevit tools. Ten minutes a day of writing real code, on a simulated Revit model of real greenhouses and building services.

Coming soon to the App Store

See the curriculum
  • Week 1 free
  • One-time purchase, no subscription
  • No account, works offline

The lessons are in Dutch for now. English lessons are on the roadmap.

A checked exercise in PyPath: well done, right the first time, plus 45 XP.
PyPath on iPhone: the Today screen with the streak, the daily goal and today's lesson.

From your first line of code to a button in your own Revit.

Learn, practise, build your own library and use it in Revit. One route, one payment.

  1. Learn

    12 weeks of Python, ten minutes a day, with instant feedback and daily review.

    In the app

  2. Practise

    The same Revit API names on a simulated model of greenhouses and building services. No Revit, no risk.

    In the app

  3. Build

    Your own library per trade: heating, water, greenhouse construction. About the trade packs

    Trade packs coming

  4. Use in Revit

    Your library as a pyRevit extension in real Revit on Windows, as a button on your own ribbon.

    Coming soon

See it in action

This is what PyPath looks like in use.

A lesson on iPhone, your own code on a simulated Revit model on the Mac, and your buttons as a pyRevit extension. Real footage from the app.

55 seconds, no sound. Recorded in the app itself on iPhone and Mac (the app is in Dutch for now).
  • 10 mina day, whenever suits you
  • 12 weeksfrom first line to your own library
  • iPhone + Macprogress synced via iCloud
  • 0 trackersno account, works offline

What makes PyPath different

Practise with the real Revit API. Without Revit.

In PyPath you write the same lines as in pyRevit: FilteredElementCollector, categories, parameters and transactions. The app runs them on a simulated model of a complete greenhouse. So you can practise on the go what you will use at the office, and nothing can go wrong in a real project.

Building services: pipe length per system

PipeLength.pushbutton/script.py
from Autodesk.Revit.DB import *

doc = __revit__.ActiveUIDocument.Document

# All pipes in the model (no pipe types)
pipes = (FilteredElementCollector(doc)
    .OfCategory(BuiltInCategory.OST_PipeCurves)
    .WhereElementIsNotElementType())

per_system = {}
for pipe in pipes:
    system = pipe.get_Parameter(
        BuiltInParameter.RBS_SYSTEM_NAME_PARAM).AsString()
    length = pipe.get_Parameter(
        BuiltInParameter.CURVE_ELEM_LENGTH).AsDouble()
    metres = UnitUtils.ConvertFromInternalUnits(
        length, UnitTypeId.Meters)
    per_system[system] = per_system.get(system, 0) + metres

for system, metres in sorted(per_system.items()):
    print("{}: {:.1f} m".format(system, metres))
Output on the simulated model
CV Aanvoer: 246.1 m
CV Retour: 248.8 m
Gietwater: 210.1 m
Simulated modelGreenhouse 9.6 × 40 m · plan
Plan of the simulated greenhouse model with the pipes per system: heating supply in orange, heating return in blue, irrigation water in green.

Greenhouses: panels and mullions per facade

FacadeGlass.pushbutton/script.py
from Autodesk.Revit.DB import *

doc = __revit__.ActiveUIDocument.Document

for wall in FilteredElementCollector(doc).OfClass(Wall):
    grid = wall.CurtainGrid
    if grid is None:
        continue  # a regular wall, not a curtain wall

    mark = wall.get_Parameter(
        BuiltInParameter.ALL_MODEL_MARK).AsString()
    panels = len(grid.GetPanelIds())
    mullions = len(grid.GetMullionIds())
    print("{}: {} panels, {} mullions".format(
        mark, panels, mullions))
Output on the simulated model
Gevel Zuid: 64 panels, 148 mullions
Gevel Oost: 96 panels, 220 mullions
Gevel Noord: 64 panels, 148 mullions
Gevel West: 96 panels, 220 mullions
Simulated modelSouth facade · elevation
Elevation of the south facade of the simulated Venlo greenhouse: 16 by 4 panels with mullions, a plinth row at the bottom and six roof spans on top.
  • Real names from the Revit API and pyRevit
  • Python
  • Text

The output above comes from the simulated model in the app (its system names and marks are Dutch). Checked against the Revit API 2025 documentation; not yet run in a real Revit.

The same names as in Revit

What you type in PyPath is what you will type in pyRevit. No made-up practice language, but the classes and methods you will find in the Revit API.

Errors like the real thing

Forget a transaction and you get an error like the one Revit gives you, with a plain-language explanation next to it.

Safe to practise

The model is simulated. You cannot break anything, and you do not need a Revit licence to practise.

What you will build

Buttons that turn an afternoon of work into a minute.

You make tools like these in the month 3 lessons and in the trade packs. On the simulated model you see straight away what they find.

  • Heating · Water

    Pipe length per system

    All pipes per system added up, as a list or as a CSV for Excel.

    Example above · Heating trade pack (coming soon)
  • Heating · Water

    Find open ends

    Finds pipes that are not connected to anything, before it shows up on site.

    Heating trade pack (coming soon)
  • Heating

    Check velocity and diameter

    Flags pipes where the water flows too fast for the chosen diameter.

    Heating trade pack (coming soon)
  • All trades

    Fill in parameters in bulk

    A status or comment on hundreds of elements at once, in one transaction you can undo.

    Week 11 of the curriculum
  • Greenhouses

    Glass and profiles per facade

    Glass area and profile length per facade and roof plane, ready for the order list.

    Greenhouse construction trade pack (coming soon)
  • Greenhouses

    Missing panes and bars

    Finds empty panels in the facades and missing glazing bars in the roof.

    Greenhouse construction trade pack (coming soon)

We will measure how much time each tool saves in the field test. Until then, we do not quote numbers.

How it works

Learn by doing. A little every day.

No hour-long videos. A short explanation, then you type it yourself, and PyPath checks it right away.

  1. An exercise in PyPath: ask for the number, length and width of a greenhouse and print its area, with the expected output shown.

    Read the exercise

    At most ten minutes of explanation in short blocks, with examples from building services and greenhouse construction. Then you know exactly what your code should do.

  2. The PyPath code editor with line numbers and an extra key row for brackets, colon and indentation.

    Type it yourself

    A real code editor, with an extra key row for brackets, colons and indentation. You learn by typing, not by watching.

  3. Feedback in PyPath: your code runs, but your output is still missing a line. With a button for the next hint.

    Get instant feedback

    If something is off, PyPath tells you in plain language what is missing and gives you a hint. No spoilers: you can see the solution after three attempts.

  4. A preview in PyPath: the plan of a simulated greenhouse with supply and return pipes, and one line of code that finds all pipes.

    Practise on the model

    Your code looks for elements in a simulated greenhouse, just like in Revit with pyRevit. You see straight away what it finds.

Stay motivated

Three short review questions every day, a streak that forgives one missed day per week, XP and levels per topic, badges, and a new app theme every time you finish a month.

  • Streak
  • XP and levels
  • Badges
  • Themes

The 12-week plan

Three months. From your first line to your own library.

About five short lessons a week. Every week ends with a checkpoint, and every lesson shows how it works in Revit.

Month 1 · weeks 1–4

Python basics

You know the core of Python and write small scripts that work.

  1. 1Variables, numbers and strings
  2. 2Lists and loops
  3. 3Conditions and logic
  4. 4Dictionaries and review

Wrap-up: monthly review

Month 2 · weeks 5–8

Intermediate and object-oriented

You write your own functions and classes and work with modules and files.

  1. 5Mastering functions
  2. 6Classes and objects
  3. 7Modules and handling errors
  4. 8Reading and writing files

Wrap-up: a small building model in objects

Month 3 · weeks 9–12

Towards Revit

You work with pyRevit and the Revit API and bundle your best functions into your own library.

  1. 9pyRevit and your first button
  2. 10Collecting and filtering elements
  3. 11Reading and changing parameters
  4. 12Your own library

Final project: a pyRevit tool that does a boring task for you

Want to know how to get started on your own first? Read the roadmap Learning Python for Revit: where do you start?

Exercises from real work

No textbook sums. Your trade.

The exercises are about building services and greenhouses, from very easy to professional level. So every line of code feels like real work.

Building services

Heating, water and electrical in greenhouse horticulture: heating pipes and zones, flow rates, heat output, water lines and electrical circuits. In Revit these are pipes, systems and connectors.

  • Pipe
  • PipingSystemType
  • MEPSystem
  • Connector

Greenhouse construction

Glass and curtain walls: glass panels, mullions, facades and roofs. In Revit these are curtain walls with their grid, panels and mullions.

  • Wall
  • CurtainGrid
  • Panel
  • Mullion

iPhone, iPad and Mac

Quick sessions on your iPhone. Big ones on your Mac.

  • One app, all your devicesOne purchase works on your iPhone, iPad and Mac with the same Apple ID.
  • Progress via iCloudStart an exercise on the train and finish it at your desk.
  • A real workspace on the MacA code editor with multiple files and a console, for the bigger assignments.
  • Fully offline and privateThe Python engine runs inside the app. No account, no server, no tracking.
PyPath on the Mac: the exercise with successful feedback on the left, the code editor with main.py and the console on the right.
The Progress screen in PyPath with level 3, the XP and the progress per month.

Pricing

Pay once. Yours forever.

Buy what you need, no subscription.

Week 1 is free. Try first, then decide: your first code within two minutes, all lessons of week 1 and the daily review.

For yourself

PyPath Basis

€99.99 one-time

Weeks 2 to 12

  • The full 12-week plan, up to your own library
  • All exercises on the simulated Revit
  • On iPhone, iPad and Mac
Best value

For your trade Coming soon

PyPath Complete

€249.99 one-time

Basis + the three launch packs

  • Everything in PyPath Basis
  • Heating, Water and Greenhouse construction
  • You save €89.97; a single trade pack costs €79.99

For your team

Team licence

In preparation

With an invoice and progress per employee

Less than one day of classroom training, and you are never away from work for a day.

Your employer can reimburse it. Send this to your manager

Prices in euros for the Netherlands, including VAT. Prices may vary by country; the App Store always shows your price. You pay through Apple, and a purchase works on all your devices with the same Apple ID. Trade packs and PyPath Complete go on sale once the trade packs have lessons.

For your team or company

More drawing work with the same people, fewer mistakes and a reason to stay. Calculate what it is worth to you, with the learning time included.

For business

FAQ

Good to know

Is the app in English?

Not yet. The lessons and the app are in Dutch for now; English lessons are on the roadmap. The code itself uses the real English names from Python, the Revit API and pyRevit.

Do I need programming experience?

No. You start at your very first line of Python. Every lesson explains what you need in short pieces and has you type it yourself right away. After three months you write your own pyRevit tools.

Do I need Revit to practise?

No. PyPath has a simulated Revit environment with the real names from the Revit API, on a model of a complete greenhouse. So you practise on your iPhone or Mac. For your own tools at work, you later use Revit with the free pyRevit add-in on a Windows PC.

Does it work alongside Stabicad, MagiCAD or Dynamo?

Yes. PyPath does not replace a building services package or Dynamo. It complements them: for what your package does not do, and for your own checks and schedules. If you know Dynamo you have a good foundation; with Python and pyRevit you make buttons your whole team can use.

Can I use this at work?

You practise in the app, without Revit and without installing anything on your work PC. To use your tools in Revit later, you need pyRevit: free and open source, but ask your IT department whether you may install it.

Can my employer pay for it?

Yes. In the Netherlands an employer can reimburse training tax-free under the work-related costs scheme (werkkostenregeling). You buy it yourself in the App Store and claim the expense. Use our ready-made letter for your manager.

Will my library work in real Revit?

That is what it is for: the exercises use the real Revit API names, and pyRevit loads your own library automatically. Exporting to a pyRevit extension and testing in real Revit are still to come; until then we say "coming soon".

Do I learn the same Python as in pyRevit?

You learn Python 3. pyRevit uses IronPython 2.7 by default and can also run Python 3. PyPath explains the differences you will run into in practice, such as f-strings versus .format().

Is it a subscription?

No, everything is a one-time purchase. Week 1 is free. After that you buy PyPath Basis (weeks 2 to 12) and, if you like, trade packs for your field, or everything at once with PyPath Complete. What you buy stays yours.

Does it work on iPhone, iPad and Mac?

Yes. It is one app for iPhone and iPad (iOS 18 or later) and Mac (macOS 15 or later). Your progress syncs via iCloud, and a purchase works on all your devices with the same Apple ID.

What happens to my data?

Nothing. PyPath does not collect any personal data: no account, no tracking, no analytics. Your code runs inside the app, and your progress stays on your device and in your own iCloud. See the privacy policy.

Is PyPath made by Autodesk or pyRevit?

No. PyPath is an independent app. Revit belongs to Autodesk, and pyRevit is a free open-source project. PyPath teaches you to work with both.

When can I download PyPath?

PyPath is coming soon to the App Store. As soon as it is available, the download button will appear on this page. Want to test it earlier? See the call below.

Write your first line today.

Week 1 is free. Ten minutes a day, and in twelve weeks you will be automating Revit.

Coming soon to the App Store

Read the guide first