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Python Python Basics (Retired) Putting the "Fun" Back in "Function" Functions

Posted by Zachary Berger
Zachary Berger
Courses Plus Student 423 Points

redux quiz

Make a function named add_list that takes a list. The function should then add all of the items in the list together and return the total. Assume the list contains only numbers. You'll probably want to use a for loop. You will not need to use input()

i cant figure out how to code this help please!

functions.py 
# add_list([1, 2, 3]) should return 6
# summarize([1, 2, 3]) should return "The sum of [1, 2, 3] is 6."
# Note: both functions will only take *one* argument each.

3 Answers

Karthik Mohandas Bangera
Karthik Mohandas Bangera
2,519 Points
Karthik Mohandas Bangera
Karthik Mohandas Bangera
2,519 Points 
def add_list(number_list):
    sum = 0
    for item in number_list:
        sum = sum + item
    return sum

def summarize(number_list):
    sum = 0
    for item in number_list:
        sum = sum + item
    return "The sum of {} is {}".format(number_list,sum)

number_list = [1,2,3]
sum = add_list(number_list)
result = summarize(number_list)
print sum
print result
Zachary Berger
Zachary Berger
Courses Plus Student 423 Points

thank you a lot. i just couldnt get some of the syntax down right tanks a ton

Nathan McElwain
Nathan McElwain
4,575 Points
Nathan McElwain
Nathan McElwain
4,575 Points

Solution without the for loop:

def add_list(x):
    y = sum(x)
    return y

def summarize(z):
    return "The sum of {} is {}.".format(z, sum(z))
Zachary Berger
PLUS
Zachary Berger
Courses Plus Student 423 Points
Zachary Berger
Zachary Berger
Courses Plus Student 423 Points

cool you just showed me how to do a double .format input too.thanks