Python: Sum of the numbers in a list between the indices of a specified range
Python List: Exercise - 128 with Solution
Write a Python program to calculate the sum of the numbers in a list between the indices of a specified range.
Sample Solution:
Python Code:
def sum_Range_list(nums, m, n):
sum_range = 0
for i in range(m, n+1, 1):
sum_range += nums[i]
return sum_range
nums = [2,1,5,6,8,3,4,9,10,11,8,12]
print("Original list:")
print(nums)
m = 8
n = 10
print("Range:",m,",",n)
print("\nSum of the specified range:")
print(sum_Range_list(nums, m, n))
Sample Output:
Original list: [2, 1, 5, 6, 8, 3, 4, 9, 10, 11, 8, 12] Range: 8 , 10 Sum of the specified range: 29
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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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