我在Raspberry Pi 4上使用Python 3。 该版本在pyenv中，为3.5.3。 这些软件包当前已安装：
absl-py 0.9.0
astor 0.8.1
certifi 2020.6.20
chardet 3.0.4
Cython 0.29.21
gast 0.2.2
google-pasta 0.2.0
grpcio 1.31.0
h5py 2.10.0
idna 2.10
importlib-metadata 1.7.0
Keras-Applications 1.0.8
Keras-Preprocessing 1.1.2
Markdown 3.2.2
numpy 1.18.5
opencv-python 4.1.1.26
pip 20.2.2
protobuf 3.13.0
PyYAML 5.3.1
requests 2.24.0
setuptools 39.1.0
six 1.15.0
tensorboard 1.14.0
tensorflow 1.14.0
tensorflow-estimator 1.14.0
termcolor 1.1.0
urllib3 1.25.10
Werkzeug 1.0.1
wheel 0.35.1
wrapt 1.12.1
zipp 1.2.0
我们使用的tensorflow软件包版本1.14.0引入了
$ pip3 install tensorflow
确认已安装
$ pip3 list
我开始
$ python3
并发布了以下导入声明：
import tensorflow as tf
但收到以下错误消息：
Python 3.5.3 (default, Aug 19 2020, 22:47:25)
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import tensorflow as tf
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/pi/.pyenv/versions/3.5.3/lib/python3.5/site-packages/tensorflow/__init__.py", line 28, in <module>
from tensorflow.python import pywrap_tensorflow # pylint: disable=unused-import
File "/home/pi/.pyenv/versions/3.5.3/lib/python3.5/site-packages/tensorflow/python/__init__.py", line 47, in <module>
import numpy as np
File "/home/pi/.pyenv/versions/3.5.3/lib/python3.5/site-packages/numpy/__init__.py", line 145, in <module>
from . import lib
File "/home/pi/.pyenv/versions/3.5.3/lib/python3.5/site-packages/numpy/lib/__init__.py", line 27, in <module>
from .index_tricks import *
File "/home/pi/.pyenv/versions/3.5.3/lib/python3.5/site-packages/numpy/lib/index_tricks.py", line 13, in <module>
import numpy.matrixlib as matrixlib
File "/home/pi/.pyenv/versions/3.5.3/lib/python3.5/site-packages/numpy/matrixlib/__init__.py", line 6, in <module>
from .defmatrix import *
File "/home/pi/.pyenv/versions/3.5.3/lib/python3.5/site-packages/numpy/matrixlib/defmatrix.py", line 13, in <module>
from numpy.linalg import matrix_power
File "/home/pi/.pyenv/versions/3.5.3/lib/python3.5/site-packages/numpy/linalg/__init__.py", line 75, in <module>
from .linalg import *
File "/home/pi/.pyenv/versions/3.5.3/lib/python3.5/site-packages/numpy/linalg/linalg.py", line 35, in <module>
from numpy.linalg import lapack_lite, _umath_linalg
ImportError: libgfortran.so.3: cannot open shared object file: No such file or directory
如果有人可以告诉我错误原因，我会很高兴。