This is not just in Python. The same is done in VBA for variables by default, in JavaScript, and earlier it was in DBase and its descendants: FoxBase, FoxPro, Clipper.
The variables data type are determined by their value assigned. This way a variable is flexible in its use, such as where an integer may be useful here then a float may be useful there.
Because Python automatically understands the data type when you assign a value to it and there's no need to determine whether the data type is integer or float or string.
For example:
A = 7 #No need to write int A
B = 7.5 #No need to write float B
C = "Hi" #No need to write string C
Once an object is assigned to a variable, you can refer to the object by that name.
Ex:x=4 here,x is the variable name that assigned to 4.we can refer variable to get the value assigned to it.
Variables generally have a data type when they are a assigned to a certain value. The data type of variable can be found by the type of value assigning to it.
eg:-We calls different variables as numeric variables as they are assigned to numeric value.(n=5.1 , n is a numeric variable as the float value is assigned to it).
