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: "To follow this example, import the Chapter04/Inspection project into your workspace and open the main.py file, or copy and paste the following code into a PyCharm project."

A block of code is set as follows:

def main():
    print(math.sqrt(4))

if __name__ == '__main__':
    main()

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

def distance(self, p):
    diff = self - p
    distance = sqrt(diff.x**2 + diff.y**2)
    return distance

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

python manage.py runserver

Bold: Indicates a new term, an important word, or words that you see on screen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "PyCharm also provides a customized view that optimally organizes workspaces in a scientific project called the SciView."