Convert iso format datetime string to datetime object in Python

Question

I am facing a issue while converting a iso format datetime string to datetime object in Python 3.6 without loosing the timezone info. The string is like this.

2021-07-04T00:00:00+02:00

I tried datetime.datetime.strptime method. But unable to set the correct format string.

datetime.datetime.strptime( "2021-07-04T00:00:00+02:00", "%Y-%m-%dT%H:%M:%S%z")

If the datetime string is in this format it works:

datetime.strptime("2021-07-04T00:00:00+0200", "%Y-%m-%dT%H:%M:%S%z")

But in this format, don't work:

datetime.datetime.strptime( "2021-07-04T00:00:00+02:00", "%Y-%m-%dT%H:%M:%S%z")

And I have the datetime in this format:

2021-07-04T00:00:00+02:00

Does this answer your question? How do I parse an ISO 8601-formatted date? — FObersteiner
– FObersteiner, Commented Jul 19, 2021 at 6:08
What it is the problem? Maybe if you write also what you tried (with actual result, and expected result), it will help us to understand better your problem. Python3.6 now is old. If you can update to Python 3.7 (or later), you have fromisoformat functions in datetime module — Giacomo Catenazzi
– Giacomo Catenazzi, Commented Jul 19, 2021 at 6:16
@MrFuppes I am not getting how to get the object using strptime method. — Satya Dev Yadav
– Satya Dev Yadav, Commented Jul 19, 2021 at 6:26

igrinis · Accepted Answer · 2021-07-19 07:13:30Z

4

For Python 3.7+ you can use datetime.datetime.fromisoformat() function, also strptime("2021-07-04T00:00:00+02:00", "%Y-%m-%dT%H:%M:%S%z") will work fine.

For Python 3.6 and lower the time zone format is expected to be ±HHMM. So you will have to transform the string before using strptime (remove the last semicolon).

For example:

tz_found = t_str.find('+')    
if tz_found!=-1 and t_str.find(':', tz_found)!=-1:
    t_str = t_str[:tz_found+3] + t_str[tz_found+4:tz_found+6]
result = datetime.datetime.strptime( t_str, "%Y-%m-%dT%H:%M:%S%z")

edited Jul 19, 2021 at 7:13

answered Jul 19, 2021 at 6:47

igrinis

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2 Comments

Satya Dev Yadav Over a year ago

But I want to retain the timezone info. strptime("2021-07-04T00:00:00+0200", "%Y-%m-%dT%H:%M:%S%z") works in Python 3.6 But if there is colon in time zone (like +02:00) it not works

Satya Dev Yadav Over a year ago

OK means, need to do the things manually. There is not any direct way!

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