Python Scripting Language W04IST-SI4011

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Questions and Answers

What does Python use instead of brackets?

Parentheses

Commas

Indentation (correct)

Semicolons

What is the recommended number of spaces to use for indentation in Python?

4 (correct)

What command can be used to run a Python script called app.py?

execute app.py

python app.py (correct)

run app.py

py app.py (correct)

What tool can be used to check Python code for compliance with PEP8?

pep8 Signup and view all the answers

What is the command to install pycodestyle using pip?

pip install pycodestyle Signup and view all the answers

What does PEP stand for?

Python Enhancement Proposal Signup and view all the answers

What is the presence requirement for lectures in this course?

Presence is not obligatory Signup and view all the answers

What type of test can be expected in the final exam?

Multiple-choice or single-answer test Signup and view all the answers

What is the minimum score required to pass the final exam?

50% of total points Signup and view all the answers

How can students access valuable books for this course?

By creating a user account in Safari Books Online service Signup and view all the answers

What is the policy on cheating and plagiarism in labs?

It is strictly prohibited Signup and view all the answers

What is the requirement for lab completion?

Ability to explain code Signup and view all the answers

How can students select their institution in Safari Books Online service?

From a drop-down list Signup and view all the answers

What is the consequence of cheating in the course?

The student is removed from the course Signup and view all the answers

What is the feature of Python environment that makes it a 'batteries included' environment?

It includes a vast collection of libraries and tools Signup and view all the answers

What is the purpose of the 'pip' command in Python?

To manage dependencies and libraries in Python Signup and view all the answers

What is the main difference between IPython and Jupyter Notebook?

IPython is a command-line interface, while Jupyter Notebook is a web-based interface Signup and view all the answers

What is the purpose of the 'conda' command in Anaconda?

To manage dependencies and libraries in Python Signup and view all the answers

What is the extension of a Python file?

.py Signup and view all the answers

What is the purpose of the 'shebang' line in a Python file?

To specify the interpreter to use Signup and view all the answers

What is the feature of IDLE that makes it a good Integrated Development Environment (IDE)?

It has syntax highlighting Signup and view all the answers

What is the difference between Python and IPython?

IPython adds extra features to the Python shell Signup and view all the answers

What is the main difference between Jupyter Notebook and Python?

Jupyter Notebook is a web-based interface, while Python is a command-line interface Signup and view all the answers

What is the purpose of the 'pylint' command in Python?

To check the code for errors and style Signup and view all the answers

What is the syntax to print a statement in Python2?

print 'Hello!' Signup and view all the answers

What is the data type of a complex number in Python?

complex Signup and view all the answers

What is the purpose of the input function in Python?

To read data from input Signup and view all the answers

What is the keyword used to define a function in Python?

def Signup and view all the answers

What is the purpose of the return keyword in Python?

To return the result of a function Signup and view all the answers

What is the purpose of the pass keyword in Python?

To indicate an empty body Signup and view all the answers

What is the purpose of the range function in Python?

To generate a list of numbers Signup and view all the answers

What is true about everything in Python?

Everything is an object Signup and view all the answers

What is the main purpose of Python Enhancement Proposals (PEPs)?

To describe new function proposals and guidelines Signup and view all the answers

Which of the following is a characteristic of Python as a dynamically-typed language?

It allows variables to change type during runtime Signup and view all the answers

What is the principle of Python design that states 'Readability counts'?

Readability counts Signup and view all the answers

What is the output of the code `print("Hello, {}!".format("World"))`?

Hello, World! Signup and view all the answers

What is an advantage of Python being a multi-paradigm language?

It allows developers to choose the best approach for a problem Signup and view all the answers

What is the main difference between Python and Java?

Python is dynamically-typed, while Java is statically-typed Signup and view all the answers

What is the error in the code `2 + '2'`?

Type error: cannot add integer and string Signup and view all the answers

What is the purpose of the `print()` function in Python?

To output data to the console Signup and view all the answers

Study Notes

Course Introduction

Course title: Script Languages (W04IST-SI4011)
Faculty: Faculty of Information and Communication Technology
Department: Department of Applied Informatics
Teachers: Wojciech Thomas, PhD
Course completion conditions: Get passing grades from lab exercises, pass the final exam, and follow the cheating and plagiarism policy

Lecture and Lab Completion

Lecture activities: Ad hoc, random, and no negative points
Lab completion conditions: Presence is obligatory, create a user account in Safari Books Online, follow the cheating and plagiarism policy, and demonstrate ability to explain code and write clean code

Python Resources

Python DOCS: https://www.python.org/doc/
Recommended books: Learning Python, Impractical Python Projects, and Automate the Boring Stuff with Python
Python flavors: Python, IPython, Jupyter Notebook, and Anaconda

Python Environment

Python is a "batteries included" environment with a distribution made by Python developers
Dependency management with pip: pip install, pip install --upgrade, and python -m pip install --upgrade pip
IPython adds extra functions to Python shell, including syntax highlighting, help, variables introspection, magic commands, and TAB completion

Python Code File

Python files use .py extension
On Windows, .py extension suggests a tool to run the code
On Linux/iOS, you need to add a "shebang" line: #!/usr/bin/python
You can run an app using py: py app.py

Code Layout and Style

Python uses indentation instead of brackets
It is advised to use spaces instead of Tabs
pycodestyle checks your code for compliance with PEP8
Install pycodestyle with pip: pip install pycodestyle

PEP

PEP ≡ Python Enhancement Proposal
A set of documents describing new functions proposals, guidelines, and process descriptions
PEP20 (The Way of Python) includes 20 principles of Python design

Multi-Paradigm Language

Python is a multi-paradigm language, allowing structured, object-based, and functional programming
Python is dynamically-typed, but strongly-typed language

Variables and Output

Python is dynamically-typed: >>> id = 12, >>> type(id), >>> id = "ad3ez79", >>> type(id)
print is a function used to output data: >>> print("Hello!"), >>> print("Hello, {}!".format("World"))
input is a function to read data from input: >>> name = input("Please, type your name:")

Basic Types

Integer: int, bool
Floating point: float (double precision)
Complex numbers: complex (e.g., z: z.real and z.real)
String: a sequence type (see: next lecture)

Conditions and Functions

if keyword executes part of the code conditionally
return keyword returns the result of the function
def keyword defines a function: def sum(a, b): return a+b

Loops and Objects

for keyword loops through the values
range function generates a list of numbers
Everything in Python is an object, including functions, values, types, and classes

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Description

Learn the basics of Python scripting language in this course for students of Department of Applied Informatics. Understand the fundamentals of Python programming and its applications.