To assign a value to a variable is simple because unlike many other languages such as C++ or FORTRAN, in Python, we don't need to define a variable before we assign a value to it.

>>>pv=22
>>>pv+2
24

We could assign the same value to different variables simultaneously. In the following example, we assign 100 to the three variables x, y, and z at once:

>>>x=y=z=100

>>>pv=100
>>>pv
100
>>>R=0.1
>>>R
0.1