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pip Preferred Installer Packages, is a package-management system written in Python used to install and manage software packages. pip search Search the library. pip list pip freeze Show the installed libraries. pip install python==2.3.0 Install specific version of package. pip show

super() : It allows you to use it in the superclass without repeating code. class Rectangle: def __init__(self, length, width, **kwargs): self.length = length self.width = width super().__init__(**kwargs) def area(self): return self.length * self.width def perimeter(self): return 2 * self.length + 2 * self.width # Here we declare that the Square class inherits from # the Rectangle class class Sq..

update It takes a key-value pair and puts into the existing dictionary. icecream = {'탱크보이': 1200, '폴라포': 1200, '빵빠레': 1800, '월드콘': 1500, '메로나': 1000} new_product = {'팥빙수':2700, '아맛나':1000} icecream.update(new_product) icecream >>> {'탱크보이': 1200, '폴라포': 1200, '빵빠레': 1800, '월드콘': 1500, '메로나': 1000, '팥빙수': 2700, '아맛나': 1000} islower Checks if all the characters in the text are in lower case. user_i..

datetime The module works with dates and time. x=datetime.datetime.now() x >>> datetime.datetime(2021, 5, 14, 13, 7, 18, 347271) timedelta It presents under datetime library which is generally used for calculating differences in dates and also can be used for date manipulations. from datetime import datetime, timedelta for day in range(5,0,-1): delta=timedelta(days=day) print(x-delta) >>> 2021-0..

sep Seperator, between the arguments to print() function. print('naver','kakao','samsung',sep=';') >>> naver;kakao;samsung print('naver','kakao','sk','samsung',sep='/') >>> naver/kakao/sk/samsung end= It can be put anything in end, then it will be following. '\n\ is the default. print("first",end=' ');print("second") >>> first second ; : Multiple command in one line. replace string.replace(old,n..