setups

Source:

Related Pages: use hbase

Setup python3:

yum install gcc openssl-devel bzip2-devel sqlite-devel libsqlite3x-devel #required for build

wget https://www.python.org/ftp/python/3.6.9/Python-3.6.9.tgz

tar xzf Python-3.6.9.tgz

cd Python-3.6.9

./configure --enable-optimizations

make altinstall #altinstall will preserve current installed version(s)

rm -rf Python-3.6.9* #remove downloaded source codes. Its maintained in /usr/local/lib

python3.6 -V #verify

happybase installations:

Tested Steps on Centos-6.5: directly jump to pip install happybase if python already installed.

yum -y update

yum groupinstall "Development tools"

yum install zlib-devel bzip2-devel sqlite sqlite-devel openssl-devel

wget https://www.python.org/ftp/python/2.7.13/Python-2.7.13.tar.xz

xz -d Python-2.7.13.tar.xz

tar xf Python-2.7.13.tar

cd Python-2.7.13

./configure --prefix=/usr/local #use --

make install #use altinstall instead if you want to maintain installed python version

wget --no-check-certificate https://bootstrap.pypa.io/get-pip.py

python2.7 get-pip.py

pip2.7 install happybase

python2.7 -c "import happybase" #to test

---------------------------------------------Errors-----------------

http://stackoverflow.com/questions/37723236/pip-error-while-installing-python-ignoring-ensurepip-failure-pip-8-1-1-requir/37723517

Ubuntu

apt-get install make build-essential libssl-dev zlib1g-dev libbz2-dev libsqlite3-dev

CentOS

yum install zlib-devel bzip2-devel sqlite sqlite-devel openssl-devel

Errors: while installing scrapy:

fatal error: openssl/opensslv.h: No such file or directory

sudo apt-get install python-pip python-dev libffi-dev libssl-dev libxml2-dev libxslt1-dev libjpeg8-dev zlib1g-dev

sudo pip install mitmproxy

pip install autopep8 #Required for auto formatting of code. Python extension for visual studio code uses this for formatting feature.

Virtual Environment Setup

Sources: tecadmin.net

#Case where multiple python version are there and you don't know consequences of installing various modules.

1. on terminal type python and hit TAB TAB, to list all available python. same can be done with pip.

2. pip -V #check at last to which python, pip is pointing to

3. pip install virtualenv

4. virtualenv ENV ##use -p python<VERSION> to load environment with specific python version.

5. cd ENV

6. source ./bin/activate #To end environment just type deactivate and hit enter.

7. cd <PROJECT_FOLDER> #This & following 2 steps are project specific...

8. pip install -r server/requirement.txt

9. pip install scrapy scrapyrt # if scrapy is required

##in windows powershell we need to perform following after above step-4 to activate environment.

4.a - start powershell as administrator

4.b- execute Set-ExecutionPolicy Unrestricted

4.c- ENV/scripts/activate.ps1

#Boto for aws. Install into a virtual environment:

virtualenv pyboto

cd pyboto

source ./bin/activate

pip install boto #tested for python 2.7

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