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

CodeInText: 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 SVM package available in the sklearn package."

A block of code is set as follows:

def url_has_exe(url):
 if url.find('.exe')!=-1:
     return 1
 else :
     return 0

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

dataframe = pd.read_csv('SMSSpamCollectionDataSet', delimiter='\t',header=None)

Any command-line input or output is written as follows:

$ mkdir css
$ cd css

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "Select System info from the Administration panel."