Python: All possible combinations of the elements of a given list
Python List: Exercise - 149 with Solution
Write a Python program to get all possible combinations of the elements of a given list.
Sample Solution:
Python Code:
def combinations_list(colors):
if len(colors) == 0:
return [[]]
result = []
for el in combinations_list(colors[1:]):
result += [el, el+[colors[0]]]
return result
colors = ['orange', 'red', 'green', 'blue']
print("Original list:")
print(colors)
print("\nAll possible combinations of the said list’s elements:")
print(combinations_list(colors))
Sample Output:
Original list: ['orange', 'red', 'green', 'blue'] All possible combinations of the said list's elements: [[], ['orange'], ['red'], ['red', 'orange'], ['green'], ['green', 'orange'], ['green', 'red'], ['green', 'red', 'orange'], ['blue'], ['blue', 'orange'], ['blue', 'red'], ['blue', 'red', 'orange'], ['blue', 'green'], ['blue', 'green', 'orange'], ['blue', 'green', 'red'], ['blue', 'green', 'red', 'orange']]
Flowchart:

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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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