How to convert a timezone aware string to datetime in Python without dateutil

Question

I have to convert a timezone-aware string like  2012-11-01T04 16 13-04 00  to a Python datetime object   I saw the dateutil module which has a parse function  but I don t really want to use it as it adds a dependency   So how can I do it  I have tried something like the following  but with no luck   datetime datetime strptime  2012-11-01T04 16 13-04 00     Y- m- dT H  M  S Z

User · Answer

I m new to Python  but found a way to convert   2017-05-27T07 20 18 000-04 00 to  2017-05-27T07 20 18 without downloading new utilities   from datetime import datetime  timedelta  time zone1   int  2017-05-27T07 20 18 000-04 00  -6    3    gt  gt returns -04  item date   datetime strptime  2017-05-27T07 20 18 000-04 00  replace   000        -6     Y- m- dT H  M  S     timedelta hours -time zone1    I m sure there are better ways to do this without slicing up the string so much  but this got the job done

User · Answer

Here is the Python Doc for datetime object using dateutil package    from dateutil parser import parse  get date obj   parse  2012-11-01T04 16 13-04 00   print get date obj

User · Answer

You can convert like this   date   datetime datetime strptime  2019-3-16T5-49-52-595Z    Y- m- dT H- M- S- f z   date time   date strftime   Y- m- dT H  M  S  fZ

User · Answer

As of Python 3 7  datetime datetime fromisoformat   can handle your format    gt  gt  gt  import datetime  gt  gt  gt  datetime datetime fromisoformat  2012-11-01T04 16 13-04 00   datetime datetime 2012  11  1  4  16  13  tzinfo datetime timezone datetime timedelta days -1  seconds 72000      In older Python versions you can t  not without a whole lot of painstaking manual timezone defining   Python does not include a timezone database  because it would be outdated too quickly  Instead  Python relies on external libraries  which can have a far faster release cycle  to provide properly configured timezones for you   As a side-effect  this means that timezone parsing also needs to be an external library  If dateutil is too heavy-weight for you  use iso8601 instead  it ll parse your specific format just fine    gt  gt  gt  import iso8601  gt  gt  gt  iso8601 parse date  2012-11-01T04 16 13-04 00   datetime datetime 2012  11  1  4  16  13  tzinfo  lt FixedOffset  -04 00  gt     iso8601 is a whopping 4KB small  Compare that tot python-dateutil s 148KB   As of Python 3 2 Python can handle simple offset-based timezones  and  z will parse -hhmm and  hhmm timezone offsets in a timestamp  That means that for a ISO 8601 timestamp you d have to remove the   in the timezone    gt  gt  gt  from datetime import datetime  gt  gt  gt  iso ts    2012-11-01T04 16 13-04 00   gt  gt  gt  datetime strptime    join iso ts rsplit      1      Y- m- dT H  M  S z   datetime datetime 2012  11  1  4  16  13  tzinfo datetime timezone datetime timedelta -1  72000      The lack of proper ISO 8601 parsing is being tracked in Python issue 15873

User · Answer

There are two issues with the code in the original question  there should not be a   in the timezone and the format string for  timezone as an offset  is lower case  z not upper  Z   This works for me in Python v3 6   gt  gt  gt  from datetime import datetime  gt  gt  gt  t   datetime strptime  2012-11-01T04 16 13-0400     Y- m- dT H  M  S z    gt  gt  gt  print t  2012-11-01 04 16 13-04 00

[python] How to convert a timezone aware string to datetime in Python without dateutil?

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