## Issue

I have a python list of strings which define some time interval. Something like:

```
intervals = ["1 days", "7 days", "30 days"]
```

I need to find the index of the maximum in this interval list. is there any library in python that would allow me to do this?

## Solution

Try the `parse_timespan`

function from `humanfriendly`

to convert each of them, then find the maximum in the usual way?

```
>>> from humanfriendly import parse_timespan
>>> intervals = ["1 days", "7 days", "30 days"]
>>> parsed_intervals = [parse_timespan(interval) for interval in intervals]
>>> max(parsed_intervals)
2592000.0
```

If you want the original format (rather than the amount of time for further processing), you can also use:

```
>>> from humanfriendly import parse_timespan
>>> intervals = ["1 days", "7 days", "30 days"]
>>> max(intervals, key=parse_timespan)
'30 days'
```

Answered By – Jiří Baum

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