Python: Generate the unique combinations
Python Itertools: Exercise-27 with Solution
Create a Python program that chooses a specified number of colors from three different colors and generates unique combinations.
Sample Solution:
Python Code:
from itertools import combinations
def unique_combinations_colors(list_data, n):
return [" and ".join(items) for items in combinations(list_data, r=n)]
colors = ["Red","Green","Blue"]
print("Original List: ",colors)
n=1
print("\nn = 1")
print(list(unique_combinations_colors(colors, n)))
n=2
print("\nn = 2")
print(list(unique_combinations_colors(colors, n)))
n=3
print("\nn = 3")
print(list(unique_combinations_colors(colors, n)))
Sample Output:
Original List: ['Red', 'Green', 'Blue'] n = 1 ['Red', 'Green', 'Blue'] n = 2 ['Red and Green', 'Red and Blue', 'Green and Blue'] n = 3 ['Red and Green and Blue']
Python Code Editor:
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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']}
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