TensorFlow 学习之(一)安装

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TensorFlow

我使用的是mac，直接进入主题,安装

1.在安装TensorFlow之前先安装python,我采用brew安装,brew 的资料详见https://brew.sh/

beew install python

2.python安装完成就可以按照pip了，pip是Python包管理工具。接下来用pip按照tensorflow

pip install https://storage.googleapis.com/tensorflow/mac/tensorflow-0.5.0-py2-none-any.whl

看到如下信息说明安装成功，恭喜。

$ pip install https://storage.googleapis.com/tensorflow/mac/tensorflow-0.5.0-py2-none-any.whl
Collecting tensorflow==0.5.0 from https://storage.googleapis.com/tensorflow/mac/tensorflow-0.5.0-py2-none-any.whl
  Downloading https://storage.googleapis.com/tensorflow/mac/tensorflow-0.5.0-py2-none-any.whl (9.8MB)
    100% |████████████████████████████████| 9.8MB 113kB/s 
Collecting numpy>=1.9.2 (from tensorflow==0.5.0)
  Downloading numpy-1.13.3-cp27-cp27m-macosx_10_6_intel.macosx_10_9_intel.macosx_10_9_x86_64.macosx_10_10_intel.macosx_10_10_x86_64.whl (4.6MB)
    100% |████████████████████████████████| 4.6MB 12kB/s 
Collecting six>=1.10.0 (from tensorflow==0.5.0)
  Downloading six-1.11.0-py2.py3-none-any.whl
Installing collected packages: numpy, six, tensorflow
Successfully installed numpy-1.13.3 six-1.11.0 tensorflow-0.5.0

3.我想试一下官方的例子。尝试我的第一个 TensorFlow 程序

控制台输入python

$ python
Python 2.7.14 (default, Sep 25 2017, 09:53:22) 
[GCC 4.2.1 Compatible Apple LLVM 9.0.0 (clang-900.0.37)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import tensorflow as tf
>>> hello = tf.constant('Hello, TensorFlow!')
>>> sess = tf.Session()
can't determine number of CPU cores: assuming 4
I tensorflow/core/common_runtime/local_device.cc:25] Local device intra op parallelism threads: 4
can't determine number of CPU cores: assuming 4
I tensorflow/core/common_runtime/local_session.cc:45] Local session inter op parallelism threads: 4
>>> print sess.run(hello)
Hello, TensorFlow!
>>> a = tf.constant(10)
>>> b = tf.constant(32)
>>> print sess.run(a+b)
42

中间有报错，但是不影响程序执行。发现其实我们下载的tensorflow版本太低了，官方已经出1.4的版本了，所以更新tensorflow

再次控制台执行

$ pip install -U tensorflow
Collecting tensorflow
  Downloading tensorflow-1.4.0-cp27-cp27m-macosx_10_11_x86_64.whl (38.8MB)
    11% |███▌                            | 4.3MB 20kB/s eta 0:28:18

这次是下载的1.4了。漫长的等待,半天了才4.3，等不及的同学可以修改pip的源

如果没有 .pip 文件夹，那么就要新建这个文件夹，mkdir .pip
然后在.pip 文件夹内新建一个文件 touch pip.conf，

编辑 pip.conf 文件，写入阿里云

[global]

index-url = http://mirrors.aliyun.com/pypi/simple/

[install]

trusted-host=mirrors.aliyun.com

后面的速度飞快。

$ pip install -U tensorflow
Collecting tensorflow
  Downloading http://mirrors.aliyun.com/pypi/packages/d6/1b/c0cabf27871cd71c3b02c8e94ee74703f6a240eaf7a139b0f0fcef85aa1c/tensorflow-1.4.0-cp27-cp27m-macosx_10_11_x86_64.whl (38.8MB)
    100% |████████████████████████████████| 38.9MB 8.1MB/s 
Requirement already up-to-date: six>=1.10.0 in /usr/local/lib/python2.7/site-packages (from tensorflow)
Collecting protobuf>=3.3.0 (from tensorflow)
  Downloading http://mirrors.aliyun.com/pypi/packages/74/34/52e4fcc023f36ba8c408765032e6b9052eff115b01a17e3d2af48fac3a97/protobuf-3.5.0.post1-py2.py3-none-any.whl (389kB)
    100% |████████████████████████████████| 389kB 6.9MB/s 
Collecting enum34>=1.1.6 (from tensorflow)
  Downloading http://mirrors.aliyun.com/pypi/packages/c5/db/e56e6b4bbac7c4a06de1c50de6fe1ef3810018ae11732a50f15f62c7d050/enum34-1.1.6-py2-none-any.whl
Collecting tensorflow-tensorboard<0.5.0,>=0.4.0rc1 (from tensorflow)
  Downloading http://mirrors.aliyun.com/pypi/packages/d5/fb/80df4eb3234c41beeeb3122b1966effbf08608fb80d2fa74bb72f8da9cb3/tensorflow_tensorboard-0.4.0rc3-py2-none-any.whl (1.7MB)
    100% |████████████████████████████████| 1.7MB 4.5MB/s 
Collecting mock>=2.0.0 (from tensorflow)
  Downloading http://mirrors.aliyun.com/pypi/packages/e6/35/f187bdf23be87092bd0f1200d43d23076cee4d0dec109f195173fd3ebc79/mock-2.0.0-py2.py3-none-any.whl (56kB)
    100% |████████████████████████████████| 61kB 17.6MB/s 
Requirement already up-to-date: numpy>=1.12.1 in /usr/local/lib/python2.7/site-packages (from tensorflow)
Requirement already up-to-date: wheel in /usr/local/lib/python2.7/site-packages (from tensorflow)
Collecting backports.weakref>=1.0rc1 (from tensorflow)
  Downloading http://mirrors.aliyun.com/pypi/packages/88/ec/f598b633c3d5ffe267aaada57d961c94fdfa183c5c3ebda2b6d151943db6/backports.weakref-1.0.post1-py2.py3-none-any.whl
Collecting setuptools (from protobuf>=3.3.0->tensorflow)
  Downloading http://mirrors.aliyun.com/pypi/packages/0f/40/b3c98aa32bc91d3d8c573443a29aa482d77268d77132b63f09d8385b21ff/setuptools-37.0.0-py2.py3-none-any.whl (481kB)
    100% |████████████████████████████████| 491kB 10.3MB/s 
Collecting werkzeug>=0.11.10 (from tensorflow-tensorboard<0.5.0,>=0.4.0rc1->tensorflow)
  Downloading http://mirrors.aliyun.com/pypi/packages/97/02/306e0d57fdbf467ec1c763bc1757ec6ba20b1332e0ea7e49111533d71d1c/Werkzeug-0.12.2-py2.py3-none-any.whl (312kB)
    100% |████████████████████████████████| 317kB 32.0MB/s 
Collecting markdown>=2.6.8 (from tensorflow-tensorboard<0.5.0,>=0.4.0rc1->tensorflow)
  Downloading http://mirrors.aliyun.com/pypi/packages/29/82/dfe242bcfd9eec0e7bf93a80a8f8d8515a95b980c44f5c0b45606397a423/Markdown-2.6.9.tar.gz (271kB)
    100% |████████████████████████████████| 276kB 811kB/s 
Collecting futures>=3.1.1; python_version < "3.2" (from tensorflow-tensorboard<0.5.0,>=0.4.0rc1->tensorflow)
  Downloading http://mirrors.aliyun.com/pypi/packages/a6/1c/72a18c8c7502ee1b38a604a5c5243aa8c2a64f4bba4e6631b1b8972235dd/futures-3.1.1-py2-none-any.whl
Collecting bleach==1.5.0 (from tensorflow-tensorboard<0.5.0,>=0.4.0rc1->tensorflow)
  Downloading http://mirrors.aliyun.com/pypi/packages/33/70/86c5fec937ea4964184d4d6c4f0b9551564f821e1c3575907639036d9b90/bleach-1.5.0-py2.py3-none-any.whl
Collecting html5lib==0.9999999 (from tensorflow-tensorboard<0.5.0,>=0.4.0rc1->tensorflow)
  Downloading http://mirrors.aliyun.com/pypi/packages/ae/ae/bcb60402c60932b32dfaf19bb53870b29eda2cd17551ba5639219fb5ebf9/html5lib-0.9999999.tar.gz (889kB)
    100% |████████████████████████████████| 890kB 4.2MB/s 
Collecting funcsigs>=1; python_version < "3.3" (from mock>=2.0.0->tensorflow)
  Downloading http://mirrors.aliyun.com/pypi/packages/69/cb/f5be453359271714c01b9bd06126eaf2e368f1fddfff30818754b5ac2328/funcsigs-1.0.2-py2.py3-none-any.whl
Collecting pbr>=0.11 (from mock>=2.0.0->tensorflow)
  Downloading http://mirrors.aliyun.com/pypi/packages/0c/5d/b077dbf309993d52c1d71e6bf6fe443a8029ea215135ebbe0b1b10e7aefc/pbr-3.1.1-py2.py3-none-any.whl (99kB)
    100% |████████████████████████████████| 102kB 8.7MB/s 
Building wheels for collected packages: markdown, html5lib
  Running setup.py bdist_wheel for markdown ... done
  Stored in directory: /Users/da_peng/Library/Caches/pip/wheels/73/ad/47/9f37537924b4a61feef8150486069191bc0994416a677b7408
  Running setup.py bdist_wheel for html5lib ... done
  Stored in directory: /Users/da_peng/Library/Caches/pip/wheels/e4/68/0c/85c19b1fbe67607477168d154bd1c20ba586fc23988e03818a
Successfully built markdown html5lib
Installing collected packages: setuptools, protobuf, enum34, werkzeug, markdown, futures, html5lib, bleach, tensorflow-tensorboard, funcsigs, pbr, mock, backports.weakref, tensorflow
  Found existing installation: setuptools 36.5.0
    Uninstalling setuptools-36.5.0:
      Successfully uninstalled setuptools-36.5.0
  Found existing installation: tensorflow 0.5.0
    Uninstalling tensorflow-0.5.0:
      Successfully uninstalled tensorflow-0.5.0
Successfully installed backports.weakref-1.0.post1 bleach-1.5.0 enum34-1.1.6 funcsigs-1.0.2 futures-3.1.1 html5lib-0.9999999 markdown-2.6.9 mock-2.0.0 pbr-3.1.1 protobuf-3.5.0.post1 setuptools-37.0.0 tensorflow-1.4.0 tensorflow-tensorboard-0.4.0rc3 werkzeug-0.12.2

安装完成，接下来开始tensorflow之旅

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