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Python: Access dictionary key’s element by index

Python Dictionary: Exercise - 55 with Solution

Write a Python program to access dictionary key's element by index.

Sample Solution:-

Python Code:

num = {'physics': 80, 'math': 90, 'chemistry': 86}
print(list(num)[0])
print(list(num)[1])
print(list(num)[2])

Sample Output:

physics
math
chemistry

Pictorial Presentation:

Python List: Access dictionary key’s element by index.

Flowchart:

Flowchart: Access dictionary key’s element by index

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Previous: Write a Python program to get the depth of a dictionary.
Next: Write a Python program to convert a given dictionary into a list of lists.

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Python: Tips of the Day

Time it:

timeit library is great for timing Python execution times. Just pass a function in string format to timeit.timeit() method and it will carry out 1 million executions to report the minimum time the code takes.

Its very useful to compare small code pieces and different functions but can be sluggish with big code.

Check out the example below demonstrating the execution time difference between 2 very similar list comprehension methods in Python:

import timeit
lst1='''list(range(100))'''
lst2='''[i for i in range(100)]'''
a=timeit.timeit(lst1)
b=timeit.timeit(lst2)
print(a, b, sep="------")

Output:

1.9301698543131351------5.389458132907748