<human>:  Write me a Python program to please add timezone info to timestamps.
<bot>: Here is a Python program to please add timezone info to timestamps

import datetime

def add_timezone(timestamp):
  """Please add timezone info to timestamps."""
  return timestamp + datetime.timedelta(hours=-1)

# Enter the timestamp
timestamp = datetime.datetime(2018, 1, 1, 12, 0, 0)

# Calling the function
timestamp_with_tz = add_timezone(timestamp)

# Printing the result
print((timestamp, timestamp_with_tz))

#Example Output
# (datetime.datetime(2018, 1, 1, 12, 0), datetime.datetime(2018, 1, 1, 11, 0))

#Remember to inspect code for bugs.