Python: Each triple of eaten, need, stock return a pair of total appetite and remaining
Python Programming Puzzles: Exercise-90 with Solution
For each triple of eaten, need, stock write a Python program to get a pair of total appetite and remaining.
Input: [[2, 5, 6], [3, 9, 22]] Output: [[7, 1], [12, 13]] Input: [[2, 3, 18], [4, 9, 2], [2, 5, 7], [3, 8, 12], [4, 9, 106]] Output: [[5, 15], [6, 0], [7, 2], [11, 4], [13, 97]] Input: [[1, 2, 3], [4, 5, 6]] Output: [[3, 1], [9, 1]]
Sample Solution:
Python Code:
#License: https://bit.ly/3oLErEI
def test(nums):
return [[a+min(b, c), max(0, c-b)] for a, b, c in nums]
nums = [[2, 5, 6], [3, 9, 22]]
print("Original list (triple) of lists:")
print(nums)
print("Each triple of eaten, need, stock return a pair of total appetite and remaining:")
print(test(nums))
nums = [[2, 3, 18], [4, 9, 2], [2, 5, 7], [3, 8, 12], [4, 9, 106]]
print("\nOriginal list (triple) of lists:")
print(nums)
print("Each triple of eaten, need, stock return a pair of total appetite and remaining:")
print(test(nums))
nums = [[1, 2, 3], [4, 5, 6]]
print("\nOriginal list (triple) of lists:")
print(nums)
print("Each triple of eaten, need, stock return a pair of total appetite and remaining:")
print(test(nums))
Sample Output:
Original list (triple) of lists: [[2, 5, 6], [3, 9, 22]] Each triple of eaten, need, stock return a pair of total appetite and remaining: [[7, 1], [12, 13]] Original list (triple) of lists: [[2, 3, 18], [4, 9, 2], [2, 5, 7], [3, 8, 12], [4, 9, 106]] Each triple of eaten, need, stock return a pair of total appetite and remaining: [[5, 15], [6, 0], [7, 2], [11, 4], [13, 97]] Original list (triple) of lists: [[1, 2, 3], [4, 5, 6]] Each triple of eaten, need, stock return a pair of total appetite and remaining: [[3, 1], [9, 1]]
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Python: Tips of the Day
Find current directory and file's directory:
To get the full path to the directory a Python file is contained in, write this in that file:
import os dir_path = os.path.dirname(os.path.realpath(__file__))
(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)
To get the current working directory use
import os cwd = os.getcwd()
Documentation references for the modules, constants and functions used above:
- The os and os.path modules.
- The __file__ constant
- os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
- os.path.dirname(path) (returns "the directory name of pathname path")
- os.getcwd() (returns "a string representing the current working directory")
- os.chdir(path) ("change the current working directory to path")
Ref: https://bit.ly/3fy0R6m
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