Python Variables:
Variable is a container to store data.
Variable is a name of memory location where data stored in a particular address.
Creating Variables:
Python has no syntax for declaring a variable.
When we declare the variable the value or data assign on it directly.
x = 5 0 y = "John" print(x) print(y)
The above code the type of x means here is integer and type of y is string.
When you assign data directly any variable in python the type of variable is defined on that time.
x = 4 # x is of type int x = "Sally" # x is now of type str print(x)
The above code output is:
Sally
Because x shows me recent value or data.
Python Casting:
If you want to specify the data type of a variable, then we are using inbuilt python functions.
x = str(4) # x will be '4' y = int(7) # y will be 7 z = float(9) # z will be 9.0 print(x) print(y) print(z)
The output of above code:
4 7 9.0
Python Return The Type Of Variable:
In python if you want to check the type of variable is it when assign some values on it, then how?
x = 5 y = "John" print(type(x)) print(type(y))
Here in above code returns the type of variable by help of this function called type(var_name).
So, the output is:
<class 'int'> <class 'str'>
What is Single Quote and Double Quote Means?
In python string variables are declared in single and double quotes:
x = "John" print(x) #double quotes are the same as single quotes: x = 'John' print(x)
The output of above code:
John John
Case-Sensitive In Python:
In python the variable names are case-sensitive, means:
//Example a = 2 A = 4
The above code plays, will not overwrite with data because both are different on python point.
But, in some case we write:
//Example a = 56 a = "asdf"
Then here a first play the role of Integer then it play the role of String.
So, in coding the recent value will be assigned on it and take granted.
