Loops in List

[wavic]

Hm!
@scaperen see my post from yesterday. When I wrote this I didn't try it with @SnadraDan's loop. Noone iterate over a list like this: for i in range(len(listA)):. So I've used for i in listA: even without thinking. Which is not working just separating the values as I've proposed previously. But it works if I use range(len(list)).

Well, when I was in the beginning with Python I used to do it in the same way. Looping over the number of the elements in the list as an index to that list. My brief C experience many years ago was the reason for this. So, how to do it in Python... With enumerate() built-in function.

I can't understand what you mean with Perl-ism. I don't know Perl at all. Anyway, here it is. The Pythonic way. Pfff, sounds religious 

>>> l = list(range(0, 50000, 5))

>>> for index, element in enumerate(l, start=1):
...     print("Item No. {} is {}.".format(index, element))

Output:
..................
..................
Item No. 9991 is 49950.
Item No. 9992 is 49955.
Item No. 9993 is 49960.
Item No. 9994 is 49965.
Item No. 9995 is 49970.
Item No. 9996 is 49975.
Item No. 9997 is 49980.
Item No. 9998 is 49985.
Item No. 9999 is 49990.
Item No. 10000 is 49995.

The format() parameters are positional or key=value. The parameter can be an expression. The replacement of the parameters into the string is in the same order. But it is not necessary. 

>>> print("February in {1} has {0} days.".format(28, 2017))

February in 2017 has 28 days.

>>> print("February in {year} has {days} days.".format(days=28, year=2017))

February in 2017 has 28 days.