what does till do in python code example

Example 1: python for loop

nums = ['one', 'two', 'three']
for elem in nums:
  print(elem)

Example 2: how to do a for loop python

print(range(4))
>>> [0,1,2,3]
print(range(1,4))
>>> [1,2,3]
print(range(2,10,2))
>>> [2,4,6,8]