How auto increment a field using a range?

MaziziJama

I have an empty table with an integer type field, let us call it "field1"

I want to populate field1 with numbers ranging from 1-5, so that my table looks like this

OBJECTID      FIELD1

1                        1

2                        2

3                        3

4                        4

5                        5

I have come across this example - How To: Create sequential numbers in a field using Python in the Field Calculator 

But do not know how to adapt it to fit my need.

Regards,

bixb0012

Similar question to In Field Calculator 1 To 9 Loop Numbers‌.

Pre-Logic Script Code:

<SPAN class="keyword token">from</SPAN> itertools <SPAN class="keyword token">import</SPAN> cycle
rot <SPAN class="operator token">=</SPAN> cycle<SPAN class="punctuation token">(</SPAN>range<SPAN class="punctuation token">(</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">,</SPAN><SPAN class="number token">6</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN>
<SPAN class="keyword token">def</SPAN> <SPAN class="token function">next_number</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">:</SPAN>
&nbsp;&nbsp;&nbsp; <SPAN class="keyword token">return</SPAN> next<SPAN class="punctuation token">(</SPAN>rot<SPAN class="punctuation token">)</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

Value:
next_number()