How to use Pandas Apply

This article will explain in detail how to use Pandas Apply for you. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article.

Pandas Apply

Apply is designed for Pandas Series.

If you are not familiar with Series, think of it as an array similar to Numpy.

Apply applies a function to each element on the specified axis.

With Apply, you can format and manipulate the value of a DataFrame column (which is a Series) without looping, which is very useful!

Df = pd.DataFrame ([[4,9],] * 3, columns= ['Aids,' B']) df A B 0 4 9 1 4 9 2 49 df.apply (np.sqrt) A B 0 2.0 3.0 1 2.0 2 2.0 3.0 df.apply (np.sum, axis=0) A 12 B 27 df.apply (np.sum) Axis=1) 0 13 1 13 2 13 this is the end of the article on "how to use Pandas Apply" Hope that the above content can be helpful to you, so that you can learn more knowledge, if you think the article is good, please share it for more people to see.