Python test question

Question

def sum(x):
res = 0
for i in range(x):
res += i
return res
print(sum(10))
Could someone please explain how this chunk of code works?

Answer 1

Zach Janzen

def sum(x):
res = 0
for i in range(x):
res+= i
return res

we have defined a function here named sum which take a number x

print( sum(10) )
Thus statement will print the result after we give x=10 in sum

res = 0
for i in range(10):
res+= i
return res

Now the for loop will be executed and it will become

res = res + 0
res = res + 1
res = res + 2
.
.
.
res = res + 9

after for loop is over

return res
will return the value of res
which the print( sum(10)) will print

And hence 45 is answer

Answer 2

print(sum(10))

It means that it it prints the sum of the numbers from 0 to 9.

Answer 3

res=0
res=0+1=1
res=1+2=3
res=3+3=6
res=6+4=10
res=10+5=15
res=15+6=21
res=21+7=28
res=28+8=36
res=36+9=45

Answer 4

This code print like this:
0+1+2+3+4+5+6+7+8+9
And the final result is 45.

Answer 5

i understand what it does. i guess my question was how does it work like what each line of code does and how it is able to print out the sum of nukbers from 0 to 9

Answer 6

Yes 👍

Answer 7

thanks dude

Answer 8

This question is finally making sense.

Answer 9

n = [2, 4, 6, 8]
res = 1
for x in n[1:3]:
res *= x

print(res)

ans: 24

Answer 10

12