Questions and Answers
Who developed Python?
Guido van Rossum
What type of programming language is Python?
Python is only used in web development.
False
Which companies use Python?
Signup and view all the answers
What is one of the biggest strengths of Python?
Signup and view all the answers
Python is difficult to learn.
Signup and view all the answers
A variable is created the moment you first assign a value to it. For example, x = ______
Signup and view all the answers
Variable names in Python are case-______
Signup and view all the answers
What is a keyword in Python?
Signup and view all the answers
Which of the following is a data type in Python?
Signup and view all the answers
To convert an object to a string representation, use the function ______(x).
Signup and view all the answers
Study Notes
Overview of Python
- Developed by Guido van Rossum in the late 1980s and early 1990s at the National Research Institute for Mathematics and Computer Science, Netherlands.
- Python is a high-level, general-purpose programming language, popular in various fields.
- Latest version utilized is Python 3, primarily in web development and machine learning.
Usage of Python
- Employed by major tech companies such as Google, Amazon, Facebook, Instagram, Dropbox, and Uber.
- Extensive libraries available for various applications, including:
- Machine Learning
- GUI applications (e.g., Kivy, Tkinter, PyQt)
- Web frameworks (e.g., Django for YouTube, Instagram)
- Image processing (e.g., OpenCV, Pillow)
- Web scraping (e.g., Scrapy, BeautifulSoup, Selenium)
Reasons to Learn Python
- Most widely used multi-purpose programming language.
- Supports both Object-Oriented and Procedural programming paradigms.
- Generally shorter and more readable code compared to languages like Java.
Key Features of Python
- Easy-to-learn: Minimal keywords, simple structure, and clear syntax facilitate learning.
- Easy-to-read: Code is visually organized and understandable.
- Easy-to-maintain: Source code is straightforward to maintain.
- Broad standard library: Highly portable and compatible across platforms (UNIX, Windows, Macintosh).
- Interactive Mode: Supports interactive testing and debugging of code snippets.
- Portable: Runs on various hardware platforms with a consistent interface.
- Extendable: Programmers can add custom low-level modules for enhanced efficiency.
- Database Interfaces: Provides access to all major commercial databases.
- GUI Programming Support: Facilitates the creation and portability of GUI applications.
Variables in Python
- Variables serve as containers for data values; created upon value assignment.
- Example assignments:
x = 5,y = "John". - Variable names must begin with a letter or underscore, cannot start with a number, and must only use alphanumeric characters and underscores.
- Variable names are case-sensitive and cannot be Python keywords.
Naming Conventions
-
Camel Case:
myVariableName = "John" -
Pascal Case:
MyVariableName = "John" -
Snake Case:
my_variable_name = "John"
Python Keywords
- There are 31 keywords that define the language's rules; they cannot serve as variable names.
Type Conversion
- Conversion between built-in types is possible using built-in functions, such as:
-
int(x[, base]): Converts to an integer. -
float(x): Converts to a floating-point number. -
str(x): Converts to a string. -
tuple(x): Converts to a tuple. -
list(s): Converts to a list. -
dict(d): Creates a dictionary from a sequence of key-value tuples.
-
Comments in Python
- Comments help document and clarify Python code.
- Single-line comments start with
#(e.g.,# This is a comment). - Multi-line comments use triple quotes:
""" This is a comment written in more than just one line """
Python Data Types
- Data types designate the kind of data that can be stored and manipulated.
- Python includes multiple built-in data types categorized into numeric values, sequences, dictionaries, and more.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
This quiz covers the basics of Python programming, including its history and significance. Learn about the origins of Python developed by Guido van Rossum and its applications in various fields such as web development and machine learning. Test your knowledge about this essential high-level programming language.
