x = [2, 4, 7, 12, 3]
sum_of_all_numbers= sum[x]
or you can try this:
x = [2, 4, 7, 12, 3]
sum_of_all_numbers= reduce[lambda q,p: p+q, x]
Reduce is a way to perform a function cumulatively on every element of a list. It can perform any function, so if you define your own modulus function, it will repeatedly perform that function on each element of the list. In order to avoid defining an entire function for performing p+q, you can instead use a lambda function.
View Discussion
Improve Article
Save Article
View Discussion
Improve Article
Save Article
Given a list of numbers, write a Python program to find the sum of all the elements in the list.
Example:
Input: [12, 15, 3, 10] Output: 40
Input: [17, 5, 3, 5] Output: 30
Example #1:
Python3
total = 0
list1 = [11, 5, 17, 18, 23]
for ele in range[0, len[list1]]:
total = total + list1[ele]
print["Sum of all elements in given list: ", total]
Output
Sum of all elements in given list: 74
Example #2 : Using while[] loop
Python3
total = 0
ele = 0
list1 = [11, 5, 17, 18, 23]
while[ele < len[list1]]:
total = total + list1[ele]
ele += 1
print["Sum of all elements in given list: ", total]
Output:
Sum of all elements in given list: 74
Example #3: Recursive way
Python3
list1 = [11, 5, 17, 18, 23]
def sumOfList[list, size]:
if [size == 0]:
return 0
else:
return list[size - 1] + sumOfList[list, size -
1]
total = sumOfList[list1, len[list1]]
print["Sum of all elements in given list: ", total]
Output
Sum of all elements in given list: 74
Example #4: Using sum[] method
Python3
list1 = [11, 5, 17, 18, 23]
total =
sum[list1]
print["Sum of all elements in given list: ", total]
Output:
Sum of all elements in given list: 74
Example 5: Using add[] function of operator module
First we have to import the operator module then using the add[] function of operator module adding the all values in the list.
Python3
from operator import*
list1 =
[12, 15, 3, 10]
result = 0
for i in list1:
result = add[i, 0]+result
print[result]
Method 6: Using enumerate function
Python3
list1 =
[12, 15, 3, 10];s=0
for i,a in enumerate[list1]:
s+=a
print[s]
Method 7: Using list comprehension
Python3
list1 = [12, 15, 3, 10]
s=[i for
i in list1]
print[sum[s]]
Method 8: Using lambda function
Python3
list1 = [12, 15, 3, 10]
print[sum[list[filter[lambda x: [x],list1]]]]