Conventions

In this book, you will find a number of text styles that distinguish between different kinds of information. Here are some examples of these styles and an explanation of their meaning.

Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "It may be necessary to prepend sudo to this command if your current user doesn't have sufficient rights on your system."

A block of code is set as follows:

def pythonsum(n): 
   a = list(range(n)) 
   b = list(range(n)) 
   c = [] 
 
   for i in range(len(a)): 
       a[i] = i ** 2 
       b[i] = i ** 3 
       c.append(a[i] + b[i]) 
 
   return c

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

$ pip3 install numpy scipy pandas matplotlib jupyter notebook

Note

Warnings or important notes appear in a box like this.

Tip

Tips and tricks appear like this.