#!/usr/bin/env python
# coding: utf-8

# # Sudo in a notebook
# 
# Sudo prompts for a password,
# but IPython doesn't notice that this is happening,
# and you will get a hang while sudo waits.
# 
# One way to deal with this is to read your password once,
# and pass that to sudo with:
# 
#     echo PASSWORD | sudo -S ...
# 
# **BE CAREFUL** with this approach, as the password is a global variable,
# so may be displayed when using things like `%whos` or `locals()`.

# In[1]:


from getpass import getpass
PASS = getpass('sudo password: ')


# In[8]:


get_ipython().system('whoami')


# In[9]:


get_ipython().system("echo $PASS | sudo -S sh -c 'whoami'")