Python OrderedDict exercises with solutions
This resource offers a total of 50 Python OrderedDict Data Type problems for practice. It includes 10 main exercises, each accompanied by solutions, detailed explanations, and four related problems.
Python OrderedDict is a dict subclass that remembers the order in which its items were inserted. When we iterate over an OrderedDict, the items will be returned in the order they were inserted, not in some arbitrary order.
The main features of OrderedDict are:
- Unlike regular dictionaries, an OrderedDict remembers the order in which items were inserted.
- When iterating through an OrderedDict, the items are returned in the order they were inserted.
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1. OrderedDict Creation
Write a Python program that creates an OrderedDict and adds some items. Print the OrderedDict contents.
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2. Sort OrderedDict
Write a Python program that sorts the OrderedDict by its keys. Sort the OrderedDict by its values as well.
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3. Access and Check in OrderedDict
Write a Python program that accesses an item in the OrderedDict by its key. Check if a specified item exists in the OrderedDict as well.
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4. Reverse OrderedDict
Write a Python program that reverses the order of a given OrderedDict.
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5. Move Key to End
Write a Python program to create an OrderedDict with the following key-value pairs:
'Laptop': 40
'Desktop': 45
'Mobile': 35
'Charger': 25
Now move the 'Desktop' key to the end of the dictionary and print the updated contents.
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6. Remove First Key-Value Pair
Write a Python program to create an OrderedDict with the following key-value pairs:
'Laptop': 40
'Desktop': 45
'Mobile': 35
'Charger': 25
Now remove the first key-value pair and print the updated OrderedDict.
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7. Merge OrderedDicts
Write a Python function that merges two OrderedDict objects. If there are duplicate keys, sum their values. Print the merged OrderedDict.
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8. Remove Key from OrderedDict
Write a Python function that creates an OrderedDict and removes a key-value pair from the OrderedDict using a given key.
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9. OrderedDict from Random Data
Write a Python program that creates an OrderedDict and populates it with random integer values as values and their ASCII characters as keys. Print the OrderedDict.
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10. Words to Length Mapping
Write a Python function that takes a list of words and returns an OrderedDict where keys are the words and values are the lengths of the words.
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