Advanced Dictionary Topics¶

built-in ** zip() ** function

all builtin functions are listed here with examples: https://docs.python.org/3/library/functions.html

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help(zip)

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zdata = zip([1, 2, 3], ('a', 'b', 'c'))

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print(zdata)

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alist = list(zdata)
print(alist)

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adict = dict(alist)
print(adict)

exercise¶

Create a dict that maps lowercase alphabets to integers, e.g., a maps to 1, b maps to 2, ..., z maps to 26 and print it

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import string
lettersToDigits = dict(zip(string.ascii_lowercase, range(1, 27)))

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print(lettersToDigits)

Ordered dictionary¶

defined in collections module

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from collections import OrderedDict
bdict = OrderedDict()

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bdict['z'] = 26
bdict['a'] = 1

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print(bdict)

exercise¶

Create a dict that maps lowercase alphabets to their corresponding ASCII values , e.g., a maps to 97, b maps to 98, ..., z maps to 122 and print the dictionary in alphabetical order

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import string
lettersToDigits = dict(zip(string.ascii_lowercase, range(ord('a'), ord('z')+1)))

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print(lettersToDigits)

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