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Python Conditional Statements

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Python Arrays

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Python Built-in Data Structure

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Python Functions

Python Function Python min() function Python max() function Python User-define Functions Python Built-in Functions Anonymous/Lambda Function in Python

Python File Handling

Python File Handling Python Read CSV Python Write CSV Python Read Excel Python Write Excel Python Read Text File Python Write Text File Read JSON File in Python

Python Exception Handling

Python Exception Handling Python Errors and exceptions Python Assert

Python OOPs Concept

OOPs Concepts in Python Classes & Objects in Python Inheritance in Python Polymorphism in Python Python Encapsulation Python Constructor Static Variables in Python Abstraction in Python

Python Iterators

Iterators in Python Yield Statement In Python

Python Generators

Python Generator

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Python Functions and Methods

Python Built-in Functions Python String Methods Python List Methods Python Dictionary Methods Python Tuple Methods Python Set Methods

Python Modules

Python Modules Python Datetime Module Python Calendar Module  

Python MySQL

Python MySQL Python MySQL Update Operation Python MySQL Delete Operation

Python MongoDB

Python MongoDB

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Python Advance Topics

Speech Recognition in Python Face Recognition in Python Python Rest API Python Command Line Arguments Python JSON Python Virtual Environment Type Casting in Python Collections in python Python Enumerate Python Debugger Python DefaultDict

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Python PPTX Python Pickle Python Seaborn Python Coroutine Python EOL Python Infinity Python math.cos and math.acos function Python Project Ideas Based On Django Reverse a String in Python Reverse a Number in Python Python Word Tokenizer Python Trigonometric Functions Python try catch exception GUI Calculator in Python Implementing geometric shapes into the game in python Installing Packages in Python Python Try Except Python Sending Email Socket Programming in Python Python CGI Programming Python Data Structures Python abstract class Python Compiler Python K-Means Clustering List Comprehension in Python3 NSE Tools In Python Operator Module In Python Palindrome In Python Permutations in Python Pillow Python introduction and setup Python Functionalities of Pillow Module Python Argmin Python whois Python JSON Schema Python lock Return Statement In Python Reverse a sentence In Python tell() function in Python Why learn Python? Write Dictionary to CSV in Python Write a String in Python Binary Search Visualization using Pygame in Python Latest Project Ideas using Python 2022 Closest Pair of Points in Python ComboBox in Python Python vs R Python Ternary Operators Self in Python Python vs Java Python Modulo Python Packages Python Syntax Python Uses Python Logical Operators Python Multiprocessing Python History Difference between Input() and raw_input() functions in Python Conditional Statements in python Confusion Matrix Visualization Python Python Algorithms Python Modules List Difference between Python 2 and Python 3 Is Python Case Sensitive Method Overloading in Python Python Arithmetic Operators Design patterns in python Assignment Operators in Python Is Python Object Oriented Programming language Division in Python Python exit commands Continue And Pass Statements In Python Colors In Python Convert String Into Int In Python Convert String To Binary In Python Convert Uppercase To Lowercase In Python Convert XML To JSON In Python Converting Set To List In Python Covariance In Python CSV Module In Python Decision Tree In Python Difference Between Yield And Return In Python Dynamic Typing In Python Abstract design pattern in python Builder design pattern in python Prototype design pattern in Python Creational design patterns in Python

How to

How to convert integer to float in Python How to reverse a string in Python How to take input in Python How to install Python in Windows How to install Python in Ubuntu How to install PIP in Python How to call a function in Python How to download Python How to comment multiple lines in Python How to create a file in Python How to create a list in Python How to declare array in Python How to clear screen in Python How to convert string to list in Python How to take multiple inputs in Python How to write a program in Python How to compare two strings in Python How to create a dictionary in Python How to create an array in Python How to update Python How to compare two lists in Python How to concatenate two strings in Python How to print pattern in Python How to check data type in python How to slice a list in python How to implement classifiers in Python How To Print Colored Text in Python How to develop a game in python How to print in same line in python How to create a class in python How to find square root in python How to import numy in python How to import pandas in python How to uninstall python How to upgrade PIP in python How to append a string in python How to open a file in python

Sorting

Python Sort List Sort Dictionary in Python Python sort() function Python Bubble Sort

Programs

Factorial Program in Python Prime Number Program in Python Fibonacci Series Program in Python Leap Year Program in Python Palindrome Program in Python Check Palindrome In Python Calculator Program in Python Armstrong Number Program in Python Python Program to add two numbers Anagram Program in Python Even Odd Program in Python GCD Program in Python Python Exit Program Python Program to check Leap Year Operator Overloading in Python Pointers in Python Python Not Equal Operator Raise Exception in Python Salary of Python Developers in India What is a Script in Python Singleton design pattern in python

Python datetime

Python provides a module named datetime to work with the date and time. Sometimes in the real life application development, we need to work with the date and time. The date is not a separate data type in Python, but we can work with the date objects by importing the module named with datetime, time, and calendar.

The datetime module permits us to generate the custom date objects to perform various operations on dates like the comparison, formatting, etc.

To work with dates as date objects, we need to import datetime module into the Python source code.

 Get the current time

The date module provides the localtime() function which is used to get the current time tuple. The example is following:

import time
z = time.localtime(time.time())
print(z)

Output:

time.struct_time(tm_year=2019, tm_mon=9, tm_mday=15,
tm_hour=17, tm_min=48, tm_sec=58, tm_wday=6, tm_y
day=258, tm_isdst=0)

The time() function

The time() function returns the total number of tick spent since 12 AM, 1st January. A tick can be considered as the smallest unit of the time. The time instants are counted since 12AM, 1st January.

import time
# prints the number of ticks spend since 12 AM, 1st January 1970
print(time.time())

Output:

1568609547.41062

Time Tuple

Index Attribute Values
0 Year 4 digit
1 Month 1 to 12
2 Day 1 to 31
3 Hour 0 to 23
4 Minute 0 to 59
5 Second 0 to 60
6 Day of weak 0 to 6
7 Day of year 1 to 366
8 Daylight savings -1,0,1, or -1

Get formatted time

The time module provides the asctime() function, which is used to format the time. It returns the formatted time for the time tuple which is passed in the asctime().

import time
print(time.asctime(time.localtime(time.time())))

Output:

Mon Sep 16 12:47:17 2019

Sleep time

The sleep() method is used to stop the execution of the python script for a  given amount of time. Consider the following example:

import time
for i in range(0,5):
print(i)
# each element will be printed after 2 seconds
time.sleep(2)

Output:

 0
 1
 2
 3
 4 

Create date object

The date objects can be created by using datetime constructor and by passing the desire data for which the date objects are to be created. Consider the following example:

import datetime
#returns the datetime object for the specified date
print(datetime.datetime(2018,12,10))

Output

2018-12-10 00:00:00

Get current date and time

The now() returns the current date and time. Let’s consider the following example:

import datetime
datetime_object = datetime.datetime.now()
print(datetime_object)

Output:

2019-09-16 11:54:49.696754

Inside datetime

Using dir() function to get a list containing all attributes of a module.

import datetime
print(dir(datetime))

Output:

['MAXYEAR',
'MINYEAR', '__builtins__', '__cached__', '__doc__', '__file__', '__loader__',
'__name__', '__package__', '__spec__', 'date', 'datetime', 'datetime_CAPI',
'time', 'timedelta', 'timezone', 'tzinfo']

Get current date

import datetime
date_object = datetime.datetime.now()
print(date_object)

Output:

2019-09-16

In the above program, we have used today() method to define the date class to get a date object containing the current local date.

Comparison of two dates

The two dates can be compared by using comparison operator like >>=, < and <=. Consider the following example.

 from datetime import datetime as dt
 #Compares the time. If the time is in between 8AM and 4PM, then it prints working hours  otherwise it prints fun hours
 if dt(dt.now().year,dt.now().month,dt.now().day,8)



Output

Working hours....

Difference between two dates and time

from datetime import datetime, date
t1 = date(year =2019, month = 7, day = 12, hour = 7, minute = 9, second = 33 )
t2 = date(year = 2018, month = 6, day = 10, hour = 5, minute = 55, second = 13)
t3 = t1-t2
print("t3=",t3)
t4 = datetime(year = 2017, month = 7, day = 12, hour = 7, minute = 9, second =13)
t5 = datetime(year = 2018, month = 6, day = 10, hour = 5, minute = 55, second =33)
t6 = t4-t5
print("t6=",t6)

Output:

t3= 397 days,0:00:00
t6= -333 days, 1:13:40 

The calendar module

Python provides a calendar object that contains various method to work with the calenders.

import calendar
cal =   calendar.month(2018,11)
print(cal)

The above code will generate the calendar of the year 2017 month of November

Output

python-date-and-time

Printing the calendar of the whole year

import calendar
year = 2017
# display the calendar
print(calendar.calendar(yy))

Output

python-date-and-time-1



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