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I want to install the Python TWAIN module in Python 3. But in the docs it says:

Python versions 2.1 through 2.5 are supported.

Can I convert it using 2to3?

jonrsharpe
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Cahit Yıldırım
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2 Answers2

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Use past module which provides an experimental translation package to help with importing and using old Python 2 modules in a Python 3 environment.

So install your package with pip

pip3 install twain --no-compile   # to ignore SyntaxErrors

And use next code to import twain in your python3 code :

from past import autotranslate
autotranslate(['twain'])

import twain


# use twain .......
Andriy Ivaneyko
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  • When I try this command `pip3 install twain --no-compile` , I have got an message like : `Downloading/unpacking twain Could not find any downloads that satisfy the requirement twain Cleaning up... No distributions at all found for twain Storing debug log for failure in C:\Users\PB\pip\pip.log` What does it mean? – Cahit Yıldırım Jan 13 '16 at 23:56
  • Please answer and complete the installation. 2016 we are stuck –  Apr 04 '16 at 06:02
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You can install twain for Python 3 using the .whl method.

First, you need to download the .whl file: twainmodule - Python Extension Packages for Windows. Pick the one that matches your Python 3 version (example: I downloaded the twain‑1.0.4‑cp38‑cp38‑win32.whl).

Important note, I specifically chose the file ending with win32.whl because I had troubles using the 64-bit version. For example, the scaner I was working with only supported 32-bit Twain.

Then, install wheel with pip install wheel.

Install twain using pip install /path/to/twain‑1.0.4‑cpXX‑cpXX‑XX.whl

Martin
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