unkempt pubes:

[print(sum(i) / len(i) ) for i in zip( *[map(float, input().split()) for _ in range(int(input().split()[1])) ] ) ]

Excellent! Undertandable to beggeners as well. Like me

Your code exceeds all cases, but i would add format in sake of robustness.

print("{0:.1f}".format(sum(i)/len(i)))

For input cases like:

5 3
89 90 78 93 25
90 91 85 88 86  
91 92 83 89 90.5

uuuuuuuuuuuuuu

very nice code............................

from statistics import mean . . . . print(mean(i))

using len(i) is unnecessary and adds more computation per iteration. simply use alreday known value of x

print(sum(i)/ x)

we can use print(sum(i)/X) because len(i) is bit confusing

Almost exactly the same:

N, X = map(int, input().strip().split())
L = []

for i in range(X):
        L.append(map(float, input().strip().split()))

for e in zip(*L):
        print(sum(e) / X)

Probably very late to ask , i see this post is 4 years ago .but ... map objects is appended in sheet so in zip(*sheet) the map objects will be unpacked how does zip reaches down to map objects elements ?

This solution is more simple and readable

Exact same solution

columns,row=map(int,input().split()) grades=[] for _ in range(row): grades.append(list(map(float,input().split()))) for student in zip(*grades): print(sum(student)/row)

'*' notation helped me!

what is the meaning of underscore in "for _ in range(x):"

why do we put *zip(sheet) and not zip(sheet) what is the difference between this 2? why cant we use the latter?

why does "_" in 'for loop' means?