Module in Python

What is the main purpose of using modules in Python?

• To avoid using classes
• To write programs in Java
• To organize reusable code in separate files
• To increase the speed of the Python interpreter

What will the following code output? import math print(math.pi

• 3.14159…
• math.pi
• Error
• PI

Which of the following imports only the sqrt function from the math module?

• import math.sqrt
• from math import sqrt
• import sqrt from math
• import sqrt

What is the effect of using an alias when importing a module in Python?

• It hides the module
• It speeds up execution
• It gives the module a shorter name
• It disables built-in functions

Why is “from math import *” discouraged in large programs?

• It increases performance
• It increases typing
• It can cause name conflicts
• It hides the source of code

What happens if you try to import a module that doesn’t exist?

• The program continues silently
• A warning is shown
• An ImportError is raised
• A file is created

Which of these commands installs the virtualenv tool using pip?

• pip load virtualenv
• pip get virtualenv
• pip install virtualenv
• install virtualenv pip

How do you create a virtual environment named my_env using virtualenv?

• python my_env.py
• virtualenv create my_env
• virtualenv my_env
• new virtualenv my_env

What command activates a virtual environment on Windows?

• source my_env/bin/activate
• Scripts\activate
• activate my_env.sh
• run my_env/activate

After activating a virtual environment, how do you install Django version 1.9 into it?

• install Django=1.9
• pip install Django==1.9
• python get Django 1.9
• pip add Django:1.9