Conventions used

There are a number of text conventions used throughout this book.

Code in text: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "The AdaBoostRegressor and AdaBoostClassifier algorithms may be downloaded from the sklearn.ensemble library and fit to any training set."

A block of code is set as follows:

X_bikes = df_bikes.iloc[:,:-1]
y_bikes = df_bikes.iloc[:,-1]
from sklearn.model_selection import train_test_split
X_train, X_test, y_train, y_test = train_test_split(X_bikes, y_bikes, random_state=2)

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

Stopping. Best iteration:
[1]	validation_0-error:0.118421
Accuracy: 88.16%

Tips or important notes

Appear like this.