Is there a simple way to flatten a list of iterables with a list comprehension, or failing that, what would you consider to be the best way to flatten a shallow list like this, balancing performance and readability?
I tried to flatten such a list with a nested list comprehension, like this:
[image for image in menuitem for menuitem in list_of_menuitems]
But I get in trouble of the NameError variety there, because the name 'menuitem' is not defined. After googling and looking around on Stack Overflow, I got the desired results with a reduced statement:
reduce(list.__add__, map(lambda x:
But this method is fairly unreadable because I need that list(x) call there because x is a Django QuerySet object.