python.md

Python

Virtual environment

Set up pyenv and pipenv

To set up a new python environment, first choose which python version you want to use. To check python versions:

pyenv versions

If the python version you want to use is on the list, continue, else:

pyenv install 3.6.0

Now, while in new project directory, install python and then pipenv:

pyenv local 3.7.1
pipenv --python 3.7.1

The environment will now run with that python version and use pip in the folder's virtual environment

Commands

pyenv versions
pyenv version

Create New Environment

pyenv virtualenv #{env name}

Create new pipenv Environment

pyenv install 3.6.5
pyenv shell 3.6.5
pip install pipenv
cd /project_path
pipenv --python 3.6.5

Testing Email Energy

python -m smtpd -n -c DebuggingServer localhost:1025

Find Error Class

try:
  something...
except:
  print(sys.exc_info()[0])

Call method with string variable

Assuming module foo with method bar:

import foo
str_var = 'bar'
method_to_call = getattr(foo, str_var)
result = method_to_call()