Python

import queue
q = queue.Queue()
q.put(1)
q.get()
pq = queue.PriorityQueue()
pq.put((priority,val))# the smaller value, the higher priority, and will pop out first

re.findall("\[.*?\]","[all]sf[that]")

L = [1,2,3]
print(*L, sep=" ")
>>> 1 2 3

s1 = "so much depends upon {}".format("a red wheel barrow")
s2 = "glazed with {} water beside the {} chickens".format("rain", "white")

s1 = " {0} is better than {1} ".format("emacs", "vim")
s2 = " {1} is better than {0} ".format("emacs", "vim")
s3 = " {0} is the same as {0} ".format("emacs")

madlib = " I {verb} the {object} off the {place} ".format(verb="took", object="cheese", place="table")

print("{0:d} - {0:x} - {0:o} - {0:b} ".format(21))
>>> 21 - 15 - 25 - 10101

import time
localtime = time.localtime(time.time())
struct = time.strptime("201901010000","%Y%m%d%H%M") # read from string
time.strftime("%Y%m%d%H%M",localtime)

import datetime
today = datetime.date.today()
today.weekday() # get weekday, Monday is 0
today.replace(2019,8,30)
anotherday = datetime.date(1999,1,1)
today - anotherday # return a datetime.timedelta

import calendar
Cal = calendar.Calendar() # calendar.Calendar(firstweekday=0)
Cal.itermonthdates(2019,8)
calendar.isleap(2019)
calendar.weekday(2019,9,1) # 0 is Monday
calendar.monthrange(2019,9) # Returns weekday of first day of the month and number of days in month
calendar.monthcalendar(2019,9)
calendar.day_name
calendar.day_abbr
calendar.month_name
calendar.month_abbr