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Python: Sort each sublist of strings in a given list of lists using lambda

Python Lambda: Exercise-27 with Solution

Write a Python program to sort each sublist of strings in a given list of lists using lambda.

Sample Solution:

Python Code :

def sort_sublists(input_list):
    result = [sorted(x, key = lambda x:x[0]) for x in input_list] 
    return result
color1 = [["green", "orange"], ["black", "white"], ["white", "black", "orange"]]
print("\nOriginal list:")
print(color1)  
print("\nAfter sorting each sublist of the said list of lists:")
print(sort_sublists(color1))

Sample Output:

Original list:
[['green', 'orange'], ['black', 'white'], ['white', 'black', 'orange']]

After sorting each sublist of the said list of lists:
[['green', 'orange'], ['black', 'white'], ['black', 'orange', 'white']]

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Python: Tips of the Day

Inverts a dictionary with non-unique hashable values:

Example:

def tips_collect_dictionary(obj):
  inv_obj = {}
  for key, value in obj.items():
    inv_obj.setdefault(value, list()).append(key)
  return inv_obj
ages = {
  "Owen": 25,
  "Jhon": 25,
  "Pepe": 15,
}
print(tips_collect_dictionary(ages))

Output:

{25: ['Owen', 'Jhon'], 15: ['Pepe']}