154: Python Again with Jason C. McDonald
Programming Throwdown
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Python: A Language for Data Science
With the exception of strings and balloons everything else is mutable it can be changed. If you've bound two names to the same list in memory or the same dictionary which would be a hash map for those of you coming from Java um if you bind two Names to the same value then it doesn't matter which name you use to change that value when you change that value the the mutated or changed value is visible from both names. This is why python is used so often for data science is because you can pass in something like a numpy array this huge just ungodly half a gig of data array and it doesn'tmatter how many times you pass it around you have one copy of memory
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