PythonPython Variable
In Python, a variable is a named location in memory used to store a value. It is like a container that holds a value, which can be of various data types such as numbers, strings, lists, or objects.
To define a variable in Python, you simply choose a name for the variable and assign a value to it using the equals sign (=) operator. Here's an example:
x = 5
In this case, we have defined a variable called x and assigned it the value 5. We can then use the variable x in our code to refer to the value it holds:
y = x + 2
print(y) # Output: 7
Variables in Python are dynamically typed, which means that the data type of a variable is determined at runtime based on the type of value assigned to it. This allows you to easily reassign a variable to a new value of a different data type.
print(y) # Output: 7
For example:
x = 5 # x is an integer
x = "hello" # x is now a string
Note that it is a good practice to choose meaningful names for your variables that reflect their purpose in your code, and to follow a consistent naming convention. In Python, variable names are case-sensitive, and cannot start with a number or contain spaces.