Converting Int values into padded hours in Python with datetime

Question

Let's say you have an object containing a schedule with start, break, lunch finish hours/minutes stored as integers:

schedules = {
        "employees": {
            "1":{
                "2018":{
                    8:{
                        1: {"day":1, "start_hours": 8, "start_minutes": 0, "1break_start_hours": 9, "1break_start_minutes": 30, "1break_end_hours": 9, "1break_end_minutes": 45, "lunch_start_hours": 11, "lunch_start_minutes": 30, "lunch_end_hours": 10, "lunch_end_minutes": 0, "2break_start_hours": 14, "2break_start_minutes": 0, "2break_end_hours": 14, "2break_end_minutes": 15, "finish_hours": 16, "finish_minutes": 30 }

Is there a way to render the hours/minutes as padded numbers (08 instead of 8 etc) on a page with jinja2 using the datetime module?

In other words, is there a bif or module that allows to convert an integer into padded number?

Answer 1

This doesn't look like you're using datetime at all? But rendering padded numbers is very easy. There's two ways to do that Jinja (and in fact in Python in general):

The "old" style, with a % format string: {{ "%02d:%02d" | format(start_hours, start_minutes) }} {{ "%02d:%02d" | format(start_hours, start_minutes) }}

And the "new" style, using a .format() method: {{ "{:02d}:{:02d}".format(start_hours, start_minutes) }}

See https://pyformat.info/ for more about string formatting.