How do I divide all items in a list

Question

>>> ListOfNumbers = [1,2,3,4,5,6,7,8,9,10]
>>> 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10  # should be computed
2.75573192e

Answer 1

You can use reduce:

ListOfNumbers = [1,2,3,4,5,6,7,8,9,10]
print(reduce(lambda x, y: x/float(y), ListOfNumbers))

Output:

2.7557319224e-07 

You can also use itertools.accumulate for Python3:

import operator
import itertools
print(list(itertools.accumulate(ListOfNumbers, func=operator.truediv))[-1])

Output:

2.7557319223985894e-07

Answer 2

You could reduce the list with a division operation. Note that since all the elements in your list are integers, you'd have to convert them to floats in order to use floating point division and get the result you expect:

result = reduce((lambda x, y: float(x) / y), [1,2,3,4,5,6,7,8,9,10])