Intermediate Python for Finance
Kennedy Behrman
Data Engineer, Author, Founder


from datetime import datetime
black_monday = datetime(1987, 10, 19)
print(black_monday)
datetime.datetime(1987, 10, 19, 0, 0)
datetime.now()
datetime.datetime(2019, 11, 6, 3, 48, 30, 886713)
black_monday_str = "Monday, October 19, 1987. 9:30 am"
format_str = "%A, %B %d, %Y. %I:%M %p"
datetime.datetime.strptime(black_monday_str, format_str)
datetime.datetime(1987, 10, 19, 9, 30)
年份
%y 無世紀(01, 02, ..., 98, 99)%Y 含世紀(0001, 0002, ..., 1998, 1999, ..., 9999)月份
%b 縮寫(月名:Jan, Feb, ..., Nov, Dec)%B 全名(月名:January, February, ... November, December)%m 數字(01, 02, ..., 11, 12)日期(日)
%d(01, 02, ..., 30, 31)星期
%a 縮寫(Sun, ... Sat)%A 全名(Sunday, ... Saturday)%w 數字(0, ..., 6)小時
%H 24 小時制(00, 01, ... 23)%I 12 小時制(01, 02, ... 12)%M(01, 02, ..., 59)秒
%S(00, 01, ... 59)微秒
%f(000000, 000001, ... 999999)AM/PM
%p(AM, PM)%m 月份
%M 分鐘
"1837-05-10"
%Y
%m
%d
"%Y-%m-%d"
"Friday, 17 May 01"
%A
%d
%B
%y
"%A, %d %B %y"
dt.strftime(format_string)
great_depression_crash = datetime.datetime(1929, 10, 29)
great_depression_crash
datetime.datetime(1929, 10, 29, 0, 0)
great_depression_crash.strftime("%a, %b %d, %Y")
'Tue, Oct 29, 1929'
Intermediate Python for Finance