Computer Science with Python || Getting Started With Python | Python Fundamentals || Data Types

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Computer Science with Python || Python Fundamentals || Data Types || Lec 03|

Data Types

Numbers
String
List
Tuple
Dictionary

Python Numbers
Number data types store numeric values. Number objects are created when you assign a value to them.

Python supports four different numerical types −

int (signed integers)
long (long integers, they can also be represented in octal and hexadecimal)
float (floating point real values)
complex (complex numbers)

Python Strings
Strings in Python are identified as a contiguous set of characters represented in the quotation marks. Python allows for either pairs of single or double quotes. Subsets of strings can be taken using the slice operator ([ ] and [:] ) with indexes starting at 0 in the beginning of the string and working their way from -1 at the end.

The plus (+) sign is the string concatenation operator and the asterisk (*) is the repetition operator.

Python Lists
Lists are the most versatile of Python's compound data types. A list contains items separated by commas and enclosed within square brackets ([]). To some extent, lists are similar to arrays in C. One difference between them is that all the items belonging to a list can be of different data type.

The values stored in a list can be accessed using the slice operator ([ ] and [:]) with indexes starting at 0 in the beginning of the list and working their way to end -1. The plus (+) sign is the list concatenation operator, and the asterisk (*) is the repetition operator.

Python Tuples
A tuple is another sequence data type that is similar to the list. A tuple consists of a number of values separated by commas. Unlike lists, however, tuples are enclosed within parentheses.

The main differences between lists and tuples are: Lists are enclosed in brackets ( [ ] ) and their elements and size can be changed, while tuples are enclosed in parentheses ( ( ) ) and cannot be updated. Tuples can be thought of as read-only lists.

Python Dictionary
Python's dictionaries are kind of hash table type. They work like associative arrays or hashes found in Perl and consist of key-value pairs. A dictionary key can be almost any Python type, but are usually numbers or strings. Values, on the other hand, can be any arbitrary Python object.

Dictionaries are enclosed by curly braces ({ }) and values can be assigned and accessed using square braces ([]).

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Computer Science with Python || Syllabus Introduction or Installation of python : https://youtu.be/TCVOpFm-97Q
Getting Started with Python : https://youtu.be/xnWmMjNeNTU
Python Fundamentals | Lec 03|| Getting Started with Python : https://youtu.be/oK4gAWKjZnEPython Fundamentals || Data Types : https://youtu.be/ZpkZpDDgAsI
Python Fundamentals || Operators : https://youtu.be/jpVHKq5R9do
Python Fundamentals || conditional statement (if ... else) : https://youtu.be/Dp0m3lpy2d4

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