FireStorm6265
09.01.2020 •
Computers and Technology
Assume that d is a python dictionary. what does the following python code produce? for k in d: if d[k] == v: return kselect one:
a. a histogram
b. an inverted dictionary
c. a list of tuples
d. a lookup
e. a reverse lookup
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Ответ:
D. a lookup
Explanation:
'Looking up' values based on keys from a dictionary is known as key look up.
A dictionary is a data structure used in Python for storing the values of several items.
A dictionary in Python is an unordered collection of items where each item is stored as a key:value pair. In dictionaries, we map an object that maps individual values with unique keys.
A lookup fetches the requested values of keys in the dictionary for operation. In the example given, a lookup is made for the key, K in dictionary, d, checking if its value is v, and returning (printing) k if the lookup is matched.
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