Programming Articles - Page 3263 of 3366

In this article we will discuss how to find the number of leap years in a specified ranges of year in python. leapdays() The calendar module offers more helpful calendar-related tasks in addition to allowing calendars to be produced like programmes. The idealised calendar used by the functions and classes defined in the Calendar module is the present Gregorian calendar stretched indefinitely in both directions. For simple text calendars, the calendar module in Python provides the function calendar.leapdays(). Syntax the syntax of the leapdays() method is as follows. leapdays() The above function takes two parameters; they are − ... Read More

You can use the calender module to get the first day of the week using Python. The calender module has a special function, firstweekday(), that returns the current setting for the weekday to start each week.Exampleimport calendar print(calendar.firstweekday()) calendar.setfirstweekday(2) print(calendar.firstweekday())OutputThis will give the output −6 2

The easiest way in Python date and time to handle timezones is to use the pytz and tzlocal modules. These libraries allows accurate and cross platform timezone calculations. pytz brings the Olson tz database into Python. It also solves the issue of ambiguous times at the end of daylight saving time, which you can read more about in the Python Library Reference (datetime.tzinfo).Before you use it you'll need to install it using −$ pip install pytz tzlocalExampleYou can use the pytz library as follows −from datetime import datetime from pytz import timezone from tzlocal import get_localzone format = "%Y-%m-%d %H:%M:%S ... Read More

The computer's UTC offset is the timezone set on your computer. YOu can get this timezone information using the time module. time.timezone returns UTC offset in seconds.For exampleimport time print(-time.timezone) # India's timezone: +5:30OutputThis will give the output −19800You can also use other workarounds to get the timezone information. You can create datetime objects for UTC and local timezones and subtract them and finally get the difference to find the timezone.For exampleimport time from datetime import datetime ts = time.time() utc_offset = (datetime.fromtimestamp(ts) -               datetime.utcfromtimestamp(ts)).total_seconds()OutputThis will give the output −19800Read More

Whenever you want to add or subtract(apply an offset) to a date/time, use a datetime.datetime(), then add or subtract datetime.timedelta() instances. A timedelta object represents a duration, the difference between two dates or times. The timedelta constructor has the following function signature − datetime.timedelta([days[, seconds[, microseconds[, milliseconds[, minutes[, hours[, weeks]]]]]]]) Note − All arguments are optional and default to 0. Arguments may be ints, longs, or floats, and may be positive or negative. You can read more about it here − https://docs.python.org/2/library/datetime.html#timedelta-objects Example An example of using the timedelta objects and dates − import datetime old_time = datetime.datetime.now() print(old_time) ... Read More

Performing arithmetic operations on dates allows us to calculate differences between dates, add or subtract time intervals, or compare one date with another using the datetime module in Python. This article will discuss how to perform several arithmetic operations using the datetime module in Python. Adding and Subtracting Days Using timedelta In the Python datetime module, timedelta is a class that represents the difference or duration between two dates or times. We can use timedelta objects to perform date arithmetic, such as adding or subtracting a certain number of days, weeks, hours, minutes, etc. To add or subtract days, we ... Read More

It is very easy to do date and time maths in Python using timedelta objects. Whenever you want to add or subtract to a date/time, use a datetime.datetime(), then add or subtract datetime.timedelta() instances. A timedelta object represents a duration, the difference between two dates or times. The timedelta constructor has the following function signature −datetime.timedelta([days[, seconds[, microseconds[, milliseconds[, minutes[, hours[, weeks]]]]]]])Note: All arguments are optional and default to 0. Arguments may be ints, longs, or floats, and may be positive or negative. You can read more about it here − https://docs.python.org/2/library/datetime.html#timedelta-objectsExampleAn example of using the timedelta objects and dates ... Read More

In Python, measuring the execution time of a function or block of code can be done using several functions and methods provided by built-in modules like time and datetime. The following are the methods to measure the execution time of Python functions. Using time.time() Method Using time.process_time() Function Using datetime.now() Function Using time.time() Method The time.time() method (returns the current UTC) can measure how long a function takes to run. It returns the current time in seconds since January 1, 1970 (known as the Unix epoch). To ... Read More

In Python, while working on date and time, converting time seconds to h:m:s (Hours: Minutes: Seconds) format can be done using simple arithmetic operations and built-in modules like datetime and time. The following are several ways to convert time seconds to h:m:s format. Using arithmetic operations (Naive Method) Using the timedelta class of the datetime module Using time.strftime() with time.gmtime() Using arithmetic operations (Naive method) This is the simplest way to convert seconds into time in H:M:S format. We use basic mathematical operations like division and modulo ... Read More

A millisecond UNIX timestamp is a number that shows how many milliseconds have elapsed since the beginning of the Unix epoch, which is January 1, 1970, at 00:00:00 Coordinated Universal Time (UTC) up to the current moment or specified date and time. Instead of counting time in days, hours, or minutes, it counts in milliseconds (1 second = 1000 milliseconds). In Python, the common way to convert a Datetime object to a milliseconds timestamp involves using the strptime() function (to parse a string into a Datetime object), then converting this datetime object into a UNIX timestamp by using the timestamp() method, ... Read More