itertools.dropwhile

Describing itertools.dropwhile(condition, itr)

• The dropwhile function is used to:

  • Cycle through each element of an iterable
  • Includes elements once any element fails the condition
  • Then, every element after that element is returned
• This condition is based on the condition parameter
• This iterable is based on the itr parameter
• dropwhile returns an iterator that drops itr elements while our condition is satisfied

Illustrating the dropwhile Function

>>> from itertools import dropwhile
>>> cond = lambda x: x>5
>>> nums = [7,6,5,8,4]

>>> itr = dropwhile(cond, nums)
>>> for i in itr: print(i)
5
8
4

References

• Documentation of the Dropwhile Function from Itertools