import sys;
import math;

class Stack:
    def __init__(self):
        self.items = []

    def isEmpty(self):
        return self.items == []

    def push(self, item):
        self.items.append(item)

    def pop(self):
        return self.items.pop()

    def peek(self):
        return self.items[len(self.items) - 1]

    def size(self):
        return len(self.items)

size = 0
intSize = sys.getsizeof(int());
s = Stack();

while (size<100):
    line = input();
    if (not line.isspace()):
        values = [int(s) for s in line.split() if s.isdigit()];
        size += intSize;
        for value in values:
            s.push(math.sqrt(value));

while (s.size()>0):
    print("%.4f" % (s.pop()));

> while (size<100):

How did you receive magic number "100"? Shouldn't you read input until EOF?