Add a colon to timezone offset when using datetime.strftime

put_colon_in_offset.py

import datetime

original_timestamp = datetime.datetime.now()

# Convert datetime object to a string representation
timestamp_string = original_timestamp.strftime("%Y-%m-%dT%H:%M:%S%z")
print(timestamp_string)
# OUTPUT: 2019-08-17T00:00:00+0000

# Add a colon separator to the offset segment 
timestamp_string = "{0}:{1}".format(
  timestamp_string[:-2],
  timestamp_string[-2:]
)
print(timestamp_string)
# OUTPUT: 2019-08-17T00:00:00+00:00