#all
Description: Check if all elements in an iterable are true.
def all(iterable):
'''
Check whether all elements in the iterable are true.
:param iterable: An iterable object
:return: True if all elements in iterable are true; False otherwise. Returns True if iterable is empty.
'''
Example:
print(all([])) # Returns True for empty iterable
print(all(range(10))) # 0...9
print(all(range(1, 10))) # 1...9