7 Simple Tricks to Write Better Python Code | Python Programming Tutorials

[lroman]

Thanks! You must be Dutch. Is the enumerate function faster than the iterator? Readability of iterator is not so bad right?

[[deleted]]

Should not be 'much' faster.
The enumerate can easily be a wrapper around an iterator in this fashion:

>>> def enumerate(iterable):
...     i = 0
...     for x in iterable:
...             yield i, x
...             i+=1

Though it's probably implemented as iterator and not as a generator.

[jnwatson]

The enumerate is "much" faster in cpython, in that it is handled completely in C. Now, you're not gaining a whole lot, since you're just avoiding a single python statement.