4/30/2023 0 Comments Python latest releaseThis read-only proxy will wrap the original dictionary which is being referred to by the view. In Python 3.10, all the returned views from the above three methods will have an additional attribute called mapping that will return a read-only proxy of the mapping. Any change you make in either of these views will also be reflected in the original dictionary. ![]() The three key methods of dictionaries, keys(), values() and items(), returns set-like objects that respectively correspond to a dynamic view on dictionaries’ keys, values, and items. ValueError: zip() argument 1 is longer than argument 2 In Python 3.10 > list(zip(,, strict=True)) Traceback (most recent call last). Read more on this issue at PEP 618.īefore Python 3.10 > list(zip(, )) Given the intuitiveness of zipping an equal number of items, I like this feature as it wakes you up to re-inspect your input. By contrast, Python 3.10 will raise a ValueError. Until Python 3.9, if you are zipping two lists of unequal length, you would get the output with the length equal to the smaller list.Īs you can see in the following example, before Python 3.10, the zip() function ignored the unmatched 'D' in the first list. If you pass strict=True, the iterables that you are zipping must be of equal length, or else a ValueError will be raised. ![]() A new, optional keyword argument strict will be added to the zip function.
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