Is it possible to set environment variables in Google's Colaboratory?

Question

I am running some Python scripts in Google\'s Colaboratory platform. Now, I need to set some environment variables of the system. Like the following shows:

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Answer 1

For PATH environment variables, such as PYTHONPATH, I use sys.path.insert or sys.path.append.

You have these 2 options because sys.path is a list of strings (paths), thus you can either insert or append more strings.

For example,

If you want to insert a new path at index 0:

import sys
sys.path.insert(0,'/path/to/folder')

If you want to append a new path:

import sys
sys.path.append('/path/to/folder')

Answer 2

I normally set the PATH with os.environ, like this:

import os
os.environ['PATH'] += ":/usr/local/go/bin"