STEEM POWER retention ratio of top 50 witnesses

by joviansummer original STEEMIT post: https://steemit.com/blog/@joviansummer/steem-power-retention-ratio-of-top-50-witnesses Hello, this is @joviansummer(witness: @jswit). Some time ago there was a bit of discussion on discord witness chanel about witnesses' power-down/cashing-out. So out of curiosity I just checked current ratio of witnesses' own STEEM POWER(VESTS) and all-time producer reward(VESTS). The ratio is calculated by the following simple formula: ratio(%) = account's own SP(MV) / all-time producer reward SP(MV) * 100% Ratio value less than 100% indicates power-down. If witness does additional power-up or gets other types of reward(e.g., curation reward), the ratio may exceed 100%. This does not take witness' other accounts into consideration. All-time producer reward data is from @steemchiller's SDS API. Here is the result: rank account own_sp prod_sp ratio 1 justyy 2188.411MV 1284.2MV 170.41% 2 steemchiller 982.134MV 124...

파이썬에서 시간 문자열을 datetime 객체로 만들기

by joviansummer
original STEEMIT post: https://steemit.com/blog/@joviansummer/datetime


파이썬에서 시간 문자열을 datetime 객체로 만드는 방법입니다. strptime()을 이용합니다. 시간 문자열과 해당 문자열의 형식(format)을 인자로 지정합니다. 예시를 보면 금방 알 수 있습니다.

import datetime

# 문자열 dt_string
dt_string = '2021.06.25 10:24:32'

# 문자열 형식
dt_format = '%Y.%m.%d %H:%M:%S'

# 문자열을 datetime 객체로 변환하여 dt_object에 할당
dt_object = datetime.datetime.strptime(dt_string, dt_format)

datetime 객체가 만들어졌으므로, 이제 날짜/시간과 관련된 처리를 편리하게 작업할 수 있습니다.

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