Python 实用宝典

Question 1

I wanted to install eventlet on my system in order to have “Herd” for software deployment.. but the terminal is showing a gcc error:

  root@agrover-OptiPlex-780:~# easy_install -U eventlet
  Searching for eventlet
  Reading http://pypi.python.org/simple/eventlet/
  Reading http://wiki.secondlife.com/wiki/Eventlet
  Reading http://eventlet.net
   Best match: eventlet 0.9.16
    Processing eventlet-0.9.16-py2.7.egg
    eventlet 0.9.16 is already the active version in easy-install.pth

   Using /usr/local/lib/python2.7/dist-packages/eventlet-0.9.16-py2.7.egg
 Processing dependencies for eventlet
 Searching for greenlet>=0.3
Reading http://pypi.python.org/simple/greenlet/
Reading https://github.com/python-greenlet/greenlet
Reading http://bitbucket.org/ambroff/greenlet
Best match: greenlet 0.3.4
Downloading http://pypi.python.org/packages/source/g/greenlet/greenlet-   0.3.4.zip#md5=530a69acebbb0d66eb5abd83523d8272
Processing greenlet-0.3.4.zip
Writing /tmp/easy_install-_aeHYm/greenlet-0.3.4/setup.cfg
Running greenlet-0.3.4/setup.py -q bdist_egg --dist-dir /tmp/easy_install-_aeHYm/greenlet-0.3.4/egg-dist-tmp-t9_gbW
In file included from greenlet.c:5:0:
greenlet.h:8:20: fatal error: Python.h: No such file or directory
compilation terminated.
error: Setup script exited with error: command 'gcc' failed with exit status 1`

Why can’t Python.h be found?

Question 2

Your install is failing because you don’t have the python development headers installed. You can do this through apt on ubuntu/debian with:

sudo apt-get install python-dev

for python3 use:

sudo apt-get install python3-dev

For eventlet you might also need the libevent libraries installed so if you get an error talking about that you can install libevent with:

sudo apt-get install libevent-dev

Question 3

For Fedora:

sudo yum install python-devel

sudo yum install libevent-devel

and finally:

sudo easy_install gevent

Question 4

What worked for me on CentOS was:

sudo yum -y install gcc
sudo yum install python-devel

Question 5

For Redhat Versions(Centos 7) Use the below command to install Python Development Package

Python 2.7

sudo yum install python-dev

Python 3.4

sudo yum install python34-devel

If the issue is still not resolved then try installing the below packages –

sudo yum install python-devel

sudo yum install openssl-devel

sudo yum install libffi-devel

Question 6

On MacOS I had trouble installing fbprophet which requires pystan which requires gcc to compile. I would consistently get the same error: command ‘gcc’ failed with exit status 1

I think I fixed the problem for myself thus:

I used brew install gcc to install the newest version, which ended up being gcc-8

Then I made sure that when gcc ran it would use gcc-8 instead.

It either worked because I added alias gcc='gcc-8 in my .zshrc (same as .bashrc but for zsh), or because I ran export PATH=/usr/local/bin:$PATH (see comment)

Also: all my attempts were inside a virtual environment and I only succeeded by installing fbprophet globally (with pip), but still no success inside a venv

Question 7

try this :

sudo apt-get install libblas-dev libatlas-base-dev

I had a similar issue on Ubuntu 14.04. For me the following Ubuntu packages

Question 8

For CentOS 7.2：

LSB Version:    :core-4.1-amd64:core-4.1-noarch
Distributor ID: CentOS
Description:    CentOS Linux release 7.2.1511 (Core) 
Release:    7.2.1511
Codename:   Core

Install eventlet:

sudo yum install python-devel
sudo easy_install -ZU eventlet

Terminal info：

[root@localhost ~]# easy_install -ZU eventlet
Searching for eventlet
Reading http://pypi.python.org/simple/eventlet/
Best match: eventlet 0.19.0
Downloading https://pypi.python.org/packages/5a/e8/ac80f330a80c18113df0f4f872fb741974ad2179f8c2a5e3e45f40214cef/eventlet-0.19.0.tar.gz#md5=fde857181347d5b7b921541367a99204
Processing eventlet-0.19.0.tar.gz
Running eventlet-0.19.0/setup.py -q bdist_egg --dist-dir /tmp/easy_install-Hh9GQY/eventlet-0.19.0/egg-dist-tmp-rBFoAx
Adding eventlet 0.19.0 to easy-install.pth file

Installed /usr/lib/python2.6/site-packages/eventlet-0.19.0-py2.6.egg
Processing dependencies for eventlet
Finished processing dependencies for eventlet

Question 9

For openSUSE 42.1 Leap Linux use this

sudo zypper install python3-devel

Question 10

This is an old post but I just run to the same problem on AWS EC2 installing regex. This working perfectly for me

sudo yum -y install gcc

and next

sudo yum -y install gcc-c++

Question 11

On MacOS I also had problems trying to install fbprophet which had gcc as one of its dependencies.

After trying several steps as recommended by @Boris the command below from the Facebook Prophet project page worked for me in the end.

conda install -c conda-forge fbprophet

It installed all the needed dependencies for fbprophet. Make sure you have anaconda installed.

Question 12

Build from source and install, this is fixed in the latest release (10.3+):

mkdir -p /tmp/install/netifaces/
cd /tmp/install/netifaces && wget -O "netifaces-0.10.4.tar.gz" "https://pypi.python.org/packages/source/n/netifaces/netifaces-0.10.4.tar.gz#md5=36da76e2cfadd24cc7510c2c0012eb1e"
tar xvzf netifaces-0.10.4.tar.gz
cd netifaces-0.10.4 && python setup.py install

Question 13

If it is still not working, you can try this

sudo apt-get install build-essential

in my case, it solved the problem.

Question 14

Similarly I fixed it like this (notice python34):

sudo yum install python34-devel

Question 15

I am using MacOS catalina 10.15.4. None of the posted solutions worked for me. What worked for me is:

 >> xcode-select --install
xcode-select: error: command line tools are already installed, use "Software Update" to install updates

>> env LDFLAGS="-I/usr/local/opt/openssl/include -L/usr/local/opt/openssl/lib" pip install psycopg2==2.8.4
Collecting psycopg2==2.8.4
  Using cached psycopg2-2.8.4.tar.gz (377 kB)
Installing collected packages: psycopg2
  Attempting uninstall: psycopg2
    Found existing installation: psycopg2 2.7.7
    Uninstalling psycopg2-2.7.7:
      Successfully uninstalled psycopg2-2.7.7
    Running setup.py install for psycopg2 ... done
Successfully installed psycopg2-2.8.4

use pip3 for python3

Question 16

if you are on Mac as myself, try in terminal: xcode-select –install

Then accept the installation request, then it works afterward https://github.com/python-pillow/Pillow/issues/3438

Python 实用宝典

错误：安装eventlet时命令’gcc’失败，退出状态为1

问题：错误：安装eventlet时命令’gcc’失败，退出状态为1

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