theano

library1.0.5pypypiunverified

Theano is a Python library that allows you to define, optimize, and evaluate mathematical expressions involving multi-dimensional arrays efficiently, with support for CPUs and GPUs. It was a pioneering library for deep learning but is now in maintenance mode; the latest version is 1.0.5. The project is no longer actively developed, and users are encouraged to migrate to alternatives like TensorFlow, PyTorch, or JAX.

ai-ml data

pip install theano

package ↗homepage ↗

INSTALL

IMPORT

SIG · THEANO

theano

ai-mlpythonv1.0.5

Install

10.2s avg

Import

3540ms

Disk

254MB

Pass rate

6/ 10

Env Coverage6 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v1.0.5 · pip install

no network on importno background threads

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

glibc

py 3.10

✓ —

✓ 9.6s

py 3.11

✓ —

✓ 9.6s

py 3.12

✕ build_error

py 3.13

✕ build_error

py 3.9

✓ —

✓ 11.4s

254MB installed

● package 254MB

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

theano

✓ import theano

✗ import theano.tensor as T

Common pattern but not the top-level import; it's fine to use theano.tensor directly.

Basic symbolic addition using Theano's tensor module.

import theano import theano.tensor as T # Define symbolic variables x = T.dscalar('x') y = T.dscalar('y') # Define expression z = x + y # Compile function f = theano.function([x, y], z) # Execute print(f(1.5, 2.5)) # Output: 4.0

Debug

Known issues

gotchaTheano is no longer actively maintained; the latest release (1.0.5) is from 2021. It may not work with newer Python versions (>=3.10) or modern CUDA toolkits.

fix

Consider migrating to PyTorch, TensorFlow, or JAX for active development and support.

affects: >=1.0.0

breakingPython 3.9 support was dropped in Theano 1.0.5; Python 3.10+ may not be fully compatible. Expect import errors with older Theano versions on newer Python.

fix

Use Python 3.8 or 3.9, or upgrade to Theano 1.0.5 and check compatibility.

affects: <=1.0.4 on Python 3.10+

deprecatedTheano's GPU backend (pygpu) is deprecated and may not work with CUDA 11+.

fix

Use CPU only or migrate to a library with active GPU support.

affects: all

Upgrade

Version history

1.0.5latest on PyPI · released Jul 27, 2020

Audit

Dependencies

numpyrequiredCore dependency for array operations

scipyoptionalUsed for some linear algebra routines

pygpuoptionalGPU backend support

Agent activity

17 hits · last 30 days

node

OpenAI (training)

Resources

packagehttps://pypi.org/project/theano/ ↗

homepagehttp://deeplearning.net/software/theano/ ↗