The "if" keyword in list comprehensions (vs the normal if - else)
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A special place use of the "if" keyword in Python is within list comprehensions. This so-called "guard" serves to select what elements of the original list or other iterable will be added to the comprehension; it works as a kind of filter. This form of the "if" statement is never followed by an "else". For more information and to try out the code, click on the link above - a notebook will open in your browser, no need to install Python on your machine.
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