Python 3 - Unable to increment global variable inside function-CodePudding

I got problem in a technical assessment. The base code(already written) looks someting like this.

count=0

def findthesum(a,n):
    global count
    sum=0
    
    '''
    write your code here
    '''
    
    return sum
            
def main():
    global count
    n=5
    a=[1,2,3,4,5]
    print(count)
    print(findthesum(a,n))
    
main()

I have to write my logic at specified position inside the code. My code looked something like this.

count=0

def findthesum(a,n):
    global count
    sum=0
    l=[]
    for i in range(31):
        l.append(2**i)

    for j in range(n):
        if(a[j] in l):
            count=count 1
            sum=sum a[j]
    return sum
            
def main():
    global count
    n=5
    a=[1,2,3,4,5]
    print(count)
    print(findthesum(a,n))
    
main()

I was unable to increment the value of value of count variable even after declaring it global.

What the issue with this and how to fix this?

CodePudding user response：

Are You trying to sum all the element? If yes, then:

count=0
a=[1,2,3,4,5]
n=5
def counting(li, le):
    for i in range(le):
        try:
            count =li[i-1]
    except:
        pass
    else:
        pass
    return count
counting(a, n)

CodePudding user response：

count=0

def findthesum(a,n):
    global count
    sum=0
    
    for i in range(n):
        sum =a[i]
        count =1
        print(count, end= '')

    print(f'  The sum is: '   str(sum)) 
            
def main():
    global count
    n=5
    a=[1,2,3,4,5]
    print(count)
    print(findthesum(a,n))
    
main()

--> '12345  The sum is: 15'