| """ Planning module. | |
| """ | |
| from datetime import datetime | |
| from time import sleep | |
| def from_parse_datetimes(ts_fmt, ts_col, event_list): | |
| """ | |
| Returns a planning list by parsing datetimes in event_list[:][ts_col] to datetime using ts_fmt | |
| Returns a new list of rows (lists) where | |
| first column is the parsed datetime, the rest is the original row | |
| """ | |
| return [[datetime.strptime(evt[ts_col], ts_fmt)] + evt for evt in event_list] | |
| def is_valid(planning): | |
| """Validates planning, returns True on valid list. | |
| - planning is expected to: be a parsed planning (see self.parse) | |
| events in planning must be sorted by date from old to new. | |
| """ | |
| if not isinstance(planning, list): | |
| return False | |
| if len(planning) < 2: | |
| return False | |
| # datetimes must be sorted by date from old to new. | |
| previous_ts = planning[0][0] | |
| for row in planning[1:]: | |
| curr_ts = row[0] | |
| if curr_ts < previous_ts: | |
| return False | |
| return True | |
| def start(planning, callback): | |
| """Starts calling back self.callback following the timeline specified by event_list. | |
| event_list is expected to be valid | |
| """ | |
| previous_ts = planning[0][0] | |
| for row in planning: | |
| curr_ts = row[0] | |
| increment = (curr_ts - previous_ts).seconds | |
| sleep(increment) | |
| callback(*row[1:]) | |
| previous_ts = curr_ts | |