Translations:Introduction to Python/135/en

How will Python know how many of the next lines will need to be executed inside the operation? For that, Python relies on indentation. The next lines must begin with a blank space, or several blank spaces, or a tab, or several tabs. And as long as the indentation stays the same the lines will be considered part of the block. If you begin one line with 2 spaces and the next one with 4, there will be an error. When you have finished, just write another line without indentation, or press to come back from the  block