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Python: Sort a list of lists by length and value

Python List: Exercise - 96 with Solution

Write a Python program to sort a given list of lists by length and value.

Sample Solution:

Python Code:

def sort_sublists(input_list):
    input_list.sort()  # sort by sublist contents
    input_list.sort(key=len)
    return input_list

list1 = [[2], [0], [1, 3], [0, 7], [9, 11], [13, 15, 17]]
print("Original list:")
print(list1)
print("\nSort the list of lists by length and value:")
print(sort_sublists(list1))

Sample Output: 

Original list:
[[2], [0], [1, 3], [0, 7], [9, 11], [13, 15, 17]]

Sort the list of lists by length and value:
[[0], [2], [0, 7], [1, 3], [9, 11], [13, 15, 17]]

Pictorial Presentation:

Python List: Sort a list of lists by length and value.

Flowchart:

Flowchart: Sort a list of lists by length and value.

Visualize Python code execution:

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Python Code Editor:

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Previous: Write a Python program to sort each sublist of strings in a given list of lists.
Next: Write a Python program to remove sublists from a given list of lists, which are outside a given range.

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Python: Tips of the Day

Given a predicate function, fn, and a prop string, this curried function will then take an object to inspect by calling the property and passing it to the predicate:

Example:

def tips_check_prop(fn, prop):
  return lambda obj: fn(obj[prop])
check_age = tips_check_prop(lambda x: x >= 25, 'age')
user = {'name': 'Owen', 'age': 25}

print(check_age(user))

Output:

True

 

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