Practical Programming, 2nd Edition

Modifying Lists

Suppose you’re typing in a list of the noble gases and your fingers slip:

>>> nobles = ['helium', 'none', 'argon', 'krypton', 'xenon', 'radon']

The error here is that you typed ’none’ instead of ’neon’. Here’s the memory model that was created by that assignment statement:

Rather than retyping the whole list, you can assign a new value to a specific element of the list:

>>> nobles[1] = 'neon'
>>> nobles
['helium', 'neon', 'argon', 'krypton', 'xenon', 'radon']

Here is the result after the assignment to nobles[1]:

That memory model also shows that list ...