2022-05-01 21:31:57 +02:00
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# Time & Datetime
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## Time
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2024-06-16 19:14:59 +02:00
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```py
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2022-05-01 21:31:57 +02:00
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# epoch: elapsed time in seconds (in UNIX starts from 01-010-1970)
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import time # UNIX time
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variable = time.time () # returns the time (in seconds) elapsed since 01-01-1970
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variable = time.ctime (epochseconds) # transform epoch into date
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var = time.perf_counter () # returns the current running time
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# execution time = start time - end time
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```
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### time.srtfrime() format
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| Format | Data |
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|--------|------------------------------------------------------------------------------------------------------------|
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| `%a` | Locale's abbreviated weekday name. |
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| `%A` | Locale's full weekday name. |
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| `%b` | Locale's abbreviated month name. |
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| `%B` | Locale's full month name. |
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| `%c` | Locale's appropriate date and time representation. |
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| `%d` | Day of the month as a decimal number `[01,31]`. |
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| `%H` | Hour (24-hour clock) as a decimal number `[00,23]`. |
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| `%I` | Hour (12-hour clock) as a decimal number `[01,12]`. |
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| `%j` | Day of the year as a decimal number `[001,366]`. |
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| `%m` | Month as a decimal number `[01,12]`. |
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| `%M` | Minute as a decimal number `[00,59]`. |
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| `%p` | Locale's equivalent of either AM or PM. |
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| `%S` | Second as a decimal number `[00,61]`. |
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| `%U` | Week number of the year (Sunday as the first day of the week) as a decimal number `[00,53]`. |
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| `%w` | Weekday as a decimal number `[0(Sunday),6]`. |
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| `%W` | Week number of the year (Monday as the first day of the week) as a decimal number `[00,53]`. |
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| `%x` | Locale's appropriate date representation. |
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| `%X` | Locale's appropriate time representation. |
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| `%y` | Year without century as a decimal number `[00,99]`. |
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| `%Y` | Year with century as a decimal number. |
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| `%z` | Time zone offset indicating a positive or negative time difference from UTC/GMT of the form +HHMM or -HHMM |
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| `%Z` | Time zone name (no characters if no time zone exists). |
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| `%%` | A literal `%` character. |
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## Datetime
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2024-06-16 19:14:59 +02:00
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```py
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2022-05-01 21:31:57 +02:00
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import datetime
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today = datetime.date.today () # returns current date
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today = datetime.datetime.today () # returns the current date and time
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# formatting example
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print ('Current Date: {} - {} - {}' .format (today.day, today.month, today.year))
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print ('Current Time: {}: {}. {}' .format (today.hour, today.minute, today.second))
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var_1 = datetime.date (year, month, day) # create date object
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var_2 = datetime.time (hour, minute, second, micro-second) # create time object
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dt = datetime.combine (var_1, var_2) # combine date and time objects into one object
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date_1 = datetime.date ('year', 'month', 'day')
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date_2 = date_1.replace (year = 'new_year')
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#DATETIME ARITHMETIC
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date_1 - date_2 # -> datetime.timedelta (num_of_days)
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datetime.timedelta # duration expressing the difference between two date, time or datetime objects
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```
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