How time transfer is always being annoying, so I make this gist for record~

python3_time_snippet.py

import time

from datetime import datetime, timedelta

print('------------------------------------')


# Get now timestamp & datetime
now_dt = datetime.today()
print('Now datetime is:', now_dt)
now_ts = time.time()
print('Now timestamp is:', now_ts)

print('------------------------------------')

# Get today's midnight datetime (put zero to hour/minute/second params)
midnight_dt = datetime(now_dt.year, now_dt.month, now_dt.day, 0, 0, 0)
print('Today\'s midnight datetime is:', midnight_dt)


# Get today's midnight timestamp (datetime -> timestamp)
midnight_ts = time.mktime(midnight_dt.timetuple())
print('Today\'s midnight datetime is:', midnight_ts)

print('------------------------------------')

# Get one-day timedelta
one_day_td = timedelta(days=1)
print('One day timedelta is:', one_day_td)

print('------------------------------------')


# Get tomorrow's midnight datetime
next_midnight_dt = midnight_dt + one_day_td
print('Tomorrow\'s midnight datetime is:', midnight_dt)


# Get tomorrow's midnight timestamp
next_midnight_ts = time.mktime(next_midnight_dt.timetuple())
print('Tomorrow\'s midnight timestamp is:', next_midnight_ts)
print('Timestamp\'s delta: ', next_midnight_ts - midnight_ts)


print('------------------------------------')


print('\nAnother way to get tomorrow\'s midnight timestamp ...')
# Add 86400.0 seconds to timestamp
next_midnight_ts = midnight_ts + 86400.0
print('Tomorrow\'s midnight timestamp is:', next_midnight_ts)


# timestamp -> datetime
next_midnight_dt = datetime.fromtimestamp(next_midnight_ts)
print('Tomorrow\'s midnight datetime is:', midnight_dt)


"""
# Result:

$ python python3_time_snippet.py
------------------------------------
Now datetime is: 2018-04-26 22:00:56.985617
Now timestamp is: 1524751256.9856498
------------------------------------
Today's midnight datetime is: 2018-04-26 00:00:00
Today's midnight datetime is: 1524672000.0
------------------------------------
One day timedelta is: 1 day, 0:00:00
------------------------------------
Tomorrow's midnight datetime is: 2018-04-26 00:00:00
Tomorrow's midnight timestamp is: 1524758400.0
Timestamp's delta 86400.0
------------------------------------

Another way to get tomorrow's midnight timestamp ...
Tomorrow's midnight timestamp is: 1524758400.0
Tomorrow's midnight datetime is: 2018-04-26 00:00:00
------------------------------------
"""