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Python Python Collections (2016, retired 2019) Dictionaries String Formatting with Dictionaries

Posted by alekseibingham
alekseibingham
4,491 Points

I got the correct answer but I don't think I understand this very well.

Once we hit the double "*" topic I got very confused as to what its actually doing and why it worked in the .format. My best guess would be it worked because the dict they used to test our code holds both keys that are hard-coded into the {}, So there is no needing to worry about the names not matching.

1 Answer

Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

It sounds like your understanding is correct. Since the dictionary keys are the same as placeholder names, simply unpacking the dictionary provides everything needed by "format" to fill in the values.

alekseibingham
alekseibingham
4,491 Points

now if there were more in the dictionary then needed to fill the placeholders would python prevent an error from occurring by only utilizing what is needed? Or would we need to add our own preventative try and except block?