Let’s look at the statement given below in Python 2.7 for Data Science.
The first result is ok, but the second one can be confusing to people who already have done C++ or Java. We should remember that in Python 2.7, “/” operator acts as a floor division for integer arguments. But if we want to obtain a float value, then one of the arguments should be a float.
“//” is the real floor division operator. Whether you enter an integer or a floating-point as an argument it returns floor value.
Python 3:
In Python 3 “/” operator returns floats in case of both integer and float as arguments.
If you want to learn more about division operator in python for data science then you can check this and this.