深度学习开发环境
深度学习开发环境详细操作教程
在本章中，我们将学习如何为Python深度学习设置环境。 我们需要安装以下软件来制作深度学习算法。
Python 2.7+
Scipy以及Numpy
Matplotlib
Theano
Keras
TensorFlow
强烈建议通过Anaconda发行版安装Python，NumPy，SciPy和Matplotlib。 它配备了所有这些软件包。
需要确保这些类型的软件安装正确。使用以下命令行 -
# Filename : example.py
# Copyright : 2020 By Lidihuo
# Author by : www.lidihuo.com
# Date : 2020-08-26
$ python
Python 3.6.3 |Anaconda custom (32-bit)| (default, Oct 13 2017, 14:21:34)
[GCC 7.2.0] on linux
接下来，可以导入所需的库并打印它们的版本 -
# Filename : example.py
# Copyright : 2020 By Lidihuo
# Author by : www.lidihuo.com
# Date : 2020-08-26
C:\Users\Administrator>python
Python 3.6.5 (v3.6.5:f59c0932b4, Mar 28 2018, 17:00:18) [MSC v.1900 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import numpy
>>> print (numpy.__version__)
1.14.5
>>>
Theano，TensorFlow和Keras的安装
在开始安装软件包 - Theano，TensorFlow和Keras之前，我们需要确认是否安装了pip。 Anaconda的包裹管理系统被称为
pip。
要确认pip的安装，请在命令行中输入pip，它会显示这个命令的使用方法 -
# Filename : example.py
# Copyright : 2020 By Lidihuo
# Author by : www.lidihuo.com
# Date : 2020-08-26
C:\Users\Administrator>pip
Usage:
pip <command> [options]
Commands:
install Install packages.
download Download packages.
uninstall Uninstall packages.
freeze Output installed packages in requirements format.
list List installed packages.
show Show information about installed packages.
check Verify installed packages have compatible dependencies.
config Manage local and global configuration.
search Search PyPI for packages.
wheel Build wheels from your requirements.
hash Compute hashes of package archives.
completion A helper command used for command completion.
help Show help for commands.
General Options:
-h, --help Show help.
--isolated Run pip in an isolated mode, ignoring environment variables and user configuration.
-v, --verbose Give more output. Option is additive, and can be used up to 3 times.
-V, --version Show version and exit.
-q, --quiet Give less output. Option is additive, and can be used up to 3 times (corresponding to
WARNING, ERROR, and CRITICAL logging levels).
--log <path> Path to a verbose appending log.
--proxy <proxy> Specify a proxy in the form [user:passwd@]proxy.server:port.
--retries <retries> Maximum number of retries each connection should attempt (default 5 times).
--timeout <sec> Set the socket timeout (default 15 seconds).
--exists-action <action> Default action when a path already exists: (s)witch, (i)gnore, (w)ipe, (b)ackup,
(a)bort).
--trusted-host <hostname> Mark this host as trusted, even though it does not have valid or any HTTPS.
--cert <path> Path to alternate CA bundle.
--client-cert <path> Path to SSL client certificate, a single file containing the private key and the
certificate in PEM format.
--cache-dir <dir> Store the cache data in <dir>.
--no-cache-dir Disable the cache.
--disable-pip-version-check
Don't periodically check PyPI to determine whether a new version of pip is available for
download. Implied with --no-index.
--no-color Suppress colored output
确认安装了pip以后，可以通过执行以下命令来安装TensorFlow和Keras -
# Filename : example.py
# Copyright : 2020 By Lidihuo
# Author by : www.lidihuo.com
# Date : 2020-08-26
$ pip install theano
$ pip install tensorflow
$ pip install keras
通过执行以下代码行来确认Theano的安装 -
# Filename : example.py
# Copyright : 2020 By Lidihuo
# Author by : www.lidihuo.com
# Date : 2020-08-26
$ python –c “import theano; print (theano.__version__)”
输出结果如下 -
# Filename : example.py
# Copyright : 2020 By Lidihuo
# Author by : www.lidihuo.com
# Date : 2020-08-26
C:\Users\Administrator>python -c "import theano; print (theano.__version__)"
WARNING (theano.configdefaults): g++ not available, if using conda: `conda install m2w64-toolchain`
E:\Program Files\Python36\lib\site-packages\theano\configdefaults.py:560: UserWarning: DeprecationWarning: there is no c++ compiler.This is deprecated and with Theano 0.11 a c++ compiler will be mandatory
warnings.warn("DeprecationWarning: there is no c++ compiler."
WARNING (theano.configdefaults): g++ not detected ! Theano will be unable to execute optimized C-implementations (for both CPU and GPU) and will default to Python implementations. Performance will be severely degraded. To remove this warning, set Theano flags cxx to an empty string.
WARNING (theano.tensor.blas): Using NumPy C-API based implementation for BLas functions.
1.0.2
``
通过执行以下代码行来确认 Tensorflow 的安装 -
```shell
$ python –c “import tensorflow; print(tensorflow.__version__)”
输出结果如下 -
# Filename : example.py
# Copyright : 2020 By Lidihuo
# Author by : www.lidihuo.com
# Date : 2020-08-26
C:\Users\Administrator>python -c "import tensorflow; print(tensorflow.__version__)"
1.8.0
``
通过执行以下代码行来确认 Keras 的安装 -
```shell
$ python –c “import keras; print (keras.__version__)”
输出结果如下 -
`shell C:\Users\Administrator> python -c "import keras; print (keras.__version__)" Using TensorFlow backend. 2.2.0
