Python
The Python questions and answers in this lesson will help you understand the types of Python questions you can expect in data science interviews.
We'll cover the following...
What is a Python tuple, and how does it differ from a list?
A tuple is a sequence of elements that can be a numeric value, date, character, etc. A tuple is different from a list because it can't be edited, but a list can be edited. We can completely delete a tuple but not add or delete an element in the tuple. Also, the tuple uses round brackets, and the list uses square brackets.
What is the main difference between a pandas Series and a single-column DataFrame in Python?
A single-column DataFrame looks similar to a pandas Series but has rows and columns. On the other hand, a pandas Series is represented by a single column. If we want to apply a pandas Series method on a single column of a DataFrame, it must be converted into a pandas Series. This is the main difference between a single-column DataFrame and a pandas Series. ...