Python 3.6.4/win10 when using pip to install keras, an error occurred while installing the dependent PyYAML, win10keras

Python 3.6.4/win10 when using pip to install keras, an error occurred while installing the dependent PyYAML, win10keras

PS C:\Users\myjac\Desktop\simple-chinese-ocr> pip install kerasCollecting keras  Downloading http://mirrors.aliyun.com/pypi/packages/68/89/58ee5f56a9c26957d97217db41780ebedca3154392cb903c3f8a08a52208/Keras-2.1.2-py2.py3-none-any.whl (304kB)    100% |████████████████████████████████| 307kB 4.7MB/sCollecting scipy>=0.14 (from keras)  Downloading http://mirrors.aliyun.com/pypi/packages/09/e9/89a97bcdbdc7aaafea93b6638f9b167ab599b58b5f9832c5a589e8e5d005/scipy-1.0.0-cp36-none-win32.whl (26.0MB)    100% |████████████████████████████████| 26.0MB 11.4MB/sRequirement already satisfied: six>=1.9.0 in c:\users\myjac\appdata\local\programs\python\python36-32\lib\site-packages (from keras)Requirement already satisfied: numpy>=1.9.1 in c:\users\myjac\appdata\local\programs\python\python36-32\lib\site-packages (from keras)Collecting pyyaml (from keras)  Downloading http://mirrors.aliyun.com/pypi/packages/4a/85/db5a2df477072b2902b0eb892feb37d88ac635d36245a72a6a69b23b383a/PyYAML-3.12.tar.gz (253kB)    100% |████████████████████████████████| 256kB 12.8MB/sInstalling collected packages: scipy, pyyaml, keras  Running setup.py install for pyyaml ... errorException:Traceback (most recent call last):  File "c:\users\myjac\appdata\local\programs\python\python36-32\lib\site-packages\pip\compat\__init__.py", line 73, in console_to_str    return s.decode(sys.__stdout__.encoding)UnicodeDecodeError: 'utf-8' codec can't decode byte 0xce in position 68: invalid continuation byteDuring handling of the above exception, another exception occurred:Traceback (most recent call last):  File "c:\users\myjac\appdata\local\programs\python\python36-32\lib\site-packages\pip\basecommand.py", line 215, in main    status = self.run(options, args)  File "c:\users\myjac\appdata\local\programs\python\python36-32\lib\site-packages\pip\commands\install.py", line 342, in run    prefix=options.prefix_path,  File "c:\users\myjac\appdata\local\programs\python\python36-32\lib\site-packages\pip\req\req_set.py", line 784, in install    **kwargs  File "c:\users\myjac\appdata\local\programs\python\python36-32\lib\site-packages\pip\req\req_install.py", line 878, in install    spinner=spinner,  File "c:\users\myjac\appdata\local\programs\python\python36-32\lib\site-packages\pip\utils\__init__.py", line 676, in call_subprocess    line = console_to_str(proc.stdout.readline())  File "c:\users\myjac\appdata\local\programs\python\python36-32\lib\site-packages\pip\compat\__init__.py", line 75, in console_to_str    return s.decode('utf_8')UnicodeDecodeError: 'utf-8' codec can't decode byte 0xce in position 68: invalid continuation byte

 

Solution

It seems that the encoding of the standard output stream is incorrect. Use the chcp command to change the code page to 65001 (UTF-8) and then execute the pip installation command.

 

For more information about chcp commands, see:

Chcp 65001 is replaced with the UTF-8 code page chcp 936 can be replaced with the default GBKchcp 437 is American English

 

2018.01.05