Mastering pandas - Second Edition

The apply() method

The apply() method provides us with a fast and efficient way to apply a function to all the values in a series. The function could be a built-in function such as a NumPy function or a user-defined function.

In the following snippet, apply() has been used to find the exponential value of all the rows in the Wins series:

sample_df["Wins"].apply(np.exp)

The following is the output:

Apply method on series

You can also define your own function and apply it to a series. Let's demonstrate this with a simple function to divide values by 100:

def div_by_100(x):return x/100sample_df["Nominations"].apply(div_by_100)

The following is ...