3 An Informal Introduction to Python

In the following examples, input and output are distinguished by the presence or absence of prompts (`>>> ' and `... '): to repeat the example, you must type everything after the prompt, when the prompt appears; lines that do not begin with a prompt are output from the interpreter.Note that a secondary prompt on a line by itself in an example means you must type a blank line; this is used to end a multi-line command.





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