The line of code you are asking about is using list comprehension to create a list and assign the data collected in this list to self.cells ... ... <看更多>

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A list is used to collect a number of values or variables in an ordered sequence. ... A list element can be any Python object, including numbers, strings, ... ... <看更多>

Python does iterate by reference (well, by value, but the value is a reference). Trying this with a list of mutable objects will quickly ... ... <看更多>