In Python, a variable is a name that refers to a value. Variables can be used to store
data such as numbers, strings, and lists. Variables are created by assigning a value
to a name using the assignment operator (=). For example, you can create a variable
called "x" and assign it the value 5 like this: x = 5. Once a variable is created, its
value can be accessed by referencing its name. Variables can also be used in mathematical
operations and can be modified by reassigning a new value to the variable.
There are several types of variables in Python, including:
Numbers: Integers (e.g. 1, 2, 3) and floating-point numbers (e.g. 3.14, 2.718)
Strings: A sequence of characters (e.g. "hello", "goodbye")
Lists: An ordered collection of items (e.g. [1, 2, 3], ["apple", "banana", "cherry"])
Tuples: An ordered collection of items that cannot be modified (e.g. (1, 2, 3), ("apple", "banana", "cherry"))
Dictionaries: A collection of key-value pairs (e.g. {"name": "John", "age": 30})
Booleans: A binary value that is either True or False
Additionally, Python also has special types of variables such as None (representing absence of value), function, class and many more which are used in specific use cases and scenarios.
here are some examples of each variable type in Python:
Numbers:
x = 5 (integer)
y = 3.14 (floating-point)
Strings:
name = "John Doe"
message = "Hello, World!"
Lists:
numbers = [1, 2, 3, 4, 5]
fruits = ["apple", "banana", "cherry"]
Tuples:
coordinates = (2, 3)
colors = ("red", "green", "blue")
Dictionaries:
person = {"name": "John Doe", "age": 30}
product = {"name": "Apple", "price": 0.99}
Booleans:
is_active = True
is_valid = False
special variables
None : x = None
function : def add(a,b): return a+b
class : class MyClass: pass
Please note that these are just examples and you can give any
valid python statement as a value to the variables.
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