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python dates
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| time.asctime([t]) | |
| t is response of gmtime() or localtime() | |
| time.clock() | |
| time.clock_gettime(clk_id) > float | |
| time.clock_gettime_ns(clk_id) > float | |
| # Returns the response in this format | |
| time.ctime([secs]) > secs since epoch | |
| >> 'Sun Jan 27 20:40:07 2019' | |
| # Returns a structure | |
| time.gmtime() | |
| >> time.struct_time(tm_year=2019, tm_mon=1, tm_mday=28, tm_hour=4, tm_min=40, tm_sec=59, tm_wday=0, tm_yday=28, tm_isdst=0) | |
| # Returns a structure | |
| time.localtime() | |
| >> time.struct_time(tm_year=2019, tm_mon=1, tm_mday=27, tm_hour=20, tm_min=42, tm_sec=4, tm_wday=6, tm_yday=27, tm_isdst=0) | |
| # Sleep | |
| time.sleep(secs) | |
| # Convert time to a format | |
| time.strftime("%Y-%m-%d %H:%M:%S", time.gmtime()) | |
| >> '2019-01-28 04:43:49' | |
| # Return the time in secs since epoch time as float | |
| time.time() | |
| >> 1548650688.857249 | |
| # Create a time from an incoming string | |
| tz = '2019-01-28T04:43:49Z' | |
| format = '%Y-%m-%dT%H:%M:%SZ' | |
| time_struct=time.strptime(tz, format) | |
| >> time.struct_time(tm_year=2019, tm_mon=1, tm_mday=28, tm_hour=4, tm_min=43, tm_sec=49, tm_wday=0, tm_yday=28, tm_isdst=-1) | |
| # Create a string representation of time | |
| time.strftime("%Y-%m-%d",time_struct) | |
| '2019-01-28' | |
| # Create a date representation from timestamp | |
| >>> time.time() | |
| 1548651332.1780329 | |
| >>> datetime.date.fromtimestamp(time.time()) | |
| datetime.date(2019, 1, 27) | |
| # Read time as string as datetime | |
| start=datetime.datetime.strptime("2018-01-01 00:00:00Z", "%Y-%m-%d %H:%M:%SZ") | |
| # Apply math on it | |
| delta_30_mins = datetime.timedelta(minutes=30) | |
| start = end - delta_30_min | |
| # Concurrency with thread pools | |
| from concurrent import futures | |
| def task(input): | |
| return "result" | |
| def done_callback(fn: futures.Future): | |
| print(type(fn)) | |
| if fn.cancelled(): | |
| print("Task was cancelled") | |
| if fn.done(): | |
| error = fn.exception() | |
| if error: | |
| print(error) | |
| else: | |
| print(fn.result()) | |
| pool = futures.ThreadPoolExecutor(max_workers=1) | |
| future = pool.submit(task, "input") | |
| future.add_done_callback(done_callback) |
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