Trouble Importing Tensorflow with Python on Jetson Nano

Autonomous Machines Jetson & Embedded Systems Jetson Nano
1

Hello, I am having some issues with the installation of Tensorflow on my Jetson Nano 4GB. I am running Jetpack 4.6.1 and followed a few forum posts on here to install Tensorflow 2.7.0+nv22.1, however when I try to import it into python I get the following error:

Python 3.6.9 (default, Mar 10 2023, 16:46:00) 
[GCC 8.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import tensorflow
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python3.6/dist-packages/tensorflow/__init__.py", line 41, in <module>
    from tensorflow.python.tools import module_util as _module_util
  File "/usr/local/lib/python3.6/dist-packages/tensorflow/python/__init__.py", line 49, in <module>
    from tensorflow.python.feature_column import feature_column_lib as feature_column
  File "/usr/local/lib/python3.6/dist-packages/tensorflow/python/feature_column/feature_column_lib.py", line 22, in <module>
    from tensorflow.python.feature_column.feature_column import *
  File "/usr/local/lib/python3.6/dist-packages/tensorflow/python/feature_column/feature_column.py", line 147, in <module>
    from tensorflow.python.layers import base
  File "/usr/local/lib/python3.6/dist-packages/tensorflow/python/layers/base.py", line 20, in <module>
    from tensorflow.python.keras.legacy_tf_layers import base
  File "/usr/local/lib/python3.6/dist-packages/tensorflow/python/keras/__init__.py", line 25, in <module>
    from tensorflow.python.keras import models
  File "/usr/local/lib/python3.6/dist-packages/tensorflow/python/keras/models.py", line 20, in <module>
    from tensorflow.python.keras import metrics as metrics_module
  File "/usr/local/lib/python3.6/dist-packages/tensorflow/python/keras/metrics.py", line 34, in <module>
    from tensorflow.python.keras import activations
  File "/usr/local/lib/python3.6/dist-packages/tensorflow/python/keras/activations.py", line 18, in <module>
    from tensorflow.python.keras.layers import advanced_activations
  File "/usr/local/lib/python3.6/dist-packages/tensorflow/python/keras/layers/__init__.py", line 29, in <module>
    from tensorflow.python.keras.layers.preprocessing.image_preprocessing import CenterCrop
  File "/usr/local/lib/python3.6/dist-packages/tensorflow/python/keras/layers/preprocessing/image_preprocessing.py", line 28, in <module>
    from tensorflow.python.keras.preprocessing import image as image_preprocessing
  File "/usr/local/lib/python3.6/dist-packages/tensorflow/python/keras/preprocessing/__init__.py", line 26, in <module>
    from tensorflow.python.keras.utils import all_utils as utils
  File "/usr/local/lib/python3.6/dist-packages/tensorflow/python/keras/utils/all_utils.py", line 34, in <module>
    from tensorflow.python.keras.utils.multi_gpu_utils import multi_gpu_model
  File "/usr/local/lib/python3.6/dist-packages/tensorflow/python/keras/utils/multi_gpu_utils.py", line 19, in <module>
    from tensorflow.python.keras.engine.training import Model
  File "/usr/local/lib/python3.6/dist-packages/tensorflow/python/keras/engine/training.py", line 52, in <module>
    from tensorflow.python.keras.saving import hdf5_format
  File "/usr/local/lib/python3.6/dist-packages/tensorflow/python/keras/saving/hdf5_format.py", line 37, in <module>
    import h5py
  File "/usr/local/lib/python3.6/dist-packages/h5py/__init__.py", line 45, in <module>
    from ._conv import register_converters as _register_converters, \
  File "h5py/h5t.pxd", line 15, in init h5py._conv
  File "h5py/h5t.pyx", line 261, in init h5py.h5t
  File "h5py/h5t.pyx", line 256, in h5py.h5t._get_available_ftypes
AttributeError: 'numpy.dtype' object has no attribute 'typeobj'

for reference, here are some of the relevant packages I have installed, hopefully this is enough info to solve the issue:

$ pip3 list
Package                       Version
----------------------------- -------------------

Cython                        0.26.1
h5py                          3.1.0
keras                         2.10.0
Keras-Applications            1.0.8
Keras-Preprocessing           1.1.2
matplotlib                    2.1.1
numpy                         1.19.4
pandas                        0.22.0
Pillow                        8.4.0
pip                           21.3.1
protobuf                      3.19.6
setuptools                    59.6.0
tensorflow                    2.7.0+nv22.1
tensorflow-estimator          2.8.0
3

Hi,

Could you upgrade Cython to v0.29.x?

$ pip3 install 'Cython<3'

Based on the below issue, the compatibility problem is fixed in cython>=0.29

Thanks.

4

I tried but it just tells me "Requirement already satisfied: Cython<3 in /usr/lib/python3/dist-packages (0.26.1)
I then tried to first remove the existing version using

$ pip3 uninstall Cython

but it gave

ERROR: Cannont uinstall 'Cython', It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.

5

Hi,

Could you try to install 0.29?
It looks like your cython is still 0.26.

Thanks.

7

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