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from typing import List # Name: Number Of Rectangles That Can Form The Largest Square # Link: https://leetcode.com/problems/number-of-rectangles-that-can-form-the-largest-square/ # Difficulty: Easy # Method: Find max and count # Time: O(n) # Space: O(1) class Solution: def countGoodRectangles(self, rectangles: L...
from typing import List class Solution: def reconstructMatrix( self, upper: int, lower: int, colsum: List[int] ) -> List[List[int]]: n = len(colsum) up = [0 for _ in range(n)] down = [0 for _ in range(n)] for i in range(n): x = colsum[i] ...
from collections import defaultdict from typing import List # Name: Number of Connected Components in an Undirected Graph # Link: https://leetcode.com/problems/number-of-connected-components-in-an-undirected-graph/ # Method: DFS from every node to n # Time: O(n) # Space: O(n + e) # Difficulty: Medium # Note: n = nr of...
from typing import List # Name: Minimum Size Subarray Sum # Link: https://leetcode.com/problems/minimum-size-subarray-sum/ # Method: Sliding window, once target sum is passed, reduce from left side as much as possible # Time: O(n) # Space: O(1) # Difficulty: Medium class Solution: def minSubArrayLen(sel...
#!/bin/python3 import math import os import random import re import sys def equal(orignal_arr): results = [] for i in range(5): minim = min(orignal_arr)-i results.append(actualEqual(orignal_arr, minim)) print(results) return min(results) def actualEqual(original_a...
from typing import List # Name: Unique Email Addresses # Link: https://leetcode.com/problems/unique-email-addresses/ # Method: Process email, store in set # Time: O(n) # Space: O(n) # Difficulty: Easy class Solution: def numUniqueEmails(self, emails: List[str]) -> int: return len(set(map(self.simplify_em...
from typing import List # Name: House Robber # Link: https://leetcode.com/problems/house-robber/ # Method: Dynamic programming, max of prev 2 days # Time: O(n) # Space: O(1) # Difficulty: Medium class Solution: def rob(self, nums: List[int]) -> int: rob_prev = 0 rob_max = 0 for x in nums:...
from functools import lru_cache class Solution: zero_ways = 0 def numWays(self, steps: int, arrLen: int) -> int: @lru_cache(None) def step(poz: int, steps: int): if poz < 0 or steps < 0 or poz >= arrLen or steps < poz: return 0 elif poz == st...
import pygame class Text_input: #Initilisation def __init__(self, origin, width, height, font, box_colour, text_colour, function, border = 0.05, password = False): # Copy Args to name space self.font = font self.origin = origin self.widt...
import sys from random import randint n=int(sys.argv[1]) ganador=randint(0,36) if n==ganador: print("El numero ganado es",ganador) print("Premio") else: print("El numero ganado es",ganador)
def same_digits(a, b): """ Implement same_digits, which takes two positive integers. It returns whether they both become the same number after replacing each sequence of a digit repeated consecutively with only one of that digit. For example, in 12222321, the sequence 2222 would be replaced by only 2, l...
#!/usr/bin/env python3 # -*- coding: utf-8 -*- """ Created on Tue Oct 23 14:22:58 2018 @author: jcarraascootarola """ import numpy as np import random class SigmoidNeuron: def __init__(self, initLearningRate,numberOfInputs): self.lastOutput=0 self.bias = random.uniform(-2.0, 2.0) ...
import sys import csv import math import operator #it first reads the text file input2 with open("input2.txt") as f: content = f.readlines() i=0 numcase=float(content[i]) #check number of votes #input of votes and candidate orders returning the vote % the highest def check(votes,cand_order): total={} fo...
#This is a comment from RAD416 students = ['aas731', 'acw438', 'agb344', 'ajm777', 'ak4706', 'ak4728', 'am5801', 'cbj238', 'cnl272', 'efm279', 'gz475', 'hj745', 'hm1273', 'hw1067', 'jj1006', 'jl2684', 'jwr300', 'ke638', 'kll392', 'ks2890', 'kx273', 'lcv232', 'lz1023', 'mam1220', 'rad416', 'rh1328', 'rs4606', 'seltzn...
# < algorithm > #1. voter ranks all candidates #2. gather the #1 candidates and elect candidates who get over half of ballots #3. if there is no elected candidate, drop the candidates, who get the lowest ballots # (one or more candidates can be dropped) #4. Among ballots that elected candidates who are already d...
# -*- coding: utf-8 -*- #Haozhe Wang #Assignment 5 #Problem 1 A import pandas as pd import csv import pylab import numpy as np stockfile = pd.read_csv('stocks.dat')#read the file with pandas call function #print stockfile apple_stock = stockfile[['month','apple']] index = apple_stock.set_index('month') #print index...
#Aliya Merali #Assignment 2 #Problem 3 import csv from collections import defaultdict incident_log = open('Incidents_grouped_by_Address_and_Zip.csv','r') borough_log = open('boroughs.csv','r') zip_log = open('zipCodes.csv','r') outputFile = open('output_problem3.txt','w') #Creating a Dict with Zipcodes:No. Incidents...
###################################################################### # # tutorial 2 - zipcode class # September 21th, 2013 # # Michael Musick # ###################################################################### class Zipcode(object): number = None def __init__(self, zipcode): self.zipcode = zipcode
import sys inputFile = open("input3.txt", "r") """ A scenario is a list containing a pair of integers P N denoting the number of papers P and the number of authors N in each scenario, followed by P + N lines. Parse the input for integer pairs and splice input into a new list of scenarios (a list of lists). Define a...
def main(): f = open('input1.txt', 'r') #open the input file input = f.readlines() # read the whole file as a list of lines line_index = 0 line_index2 = int(input[line_index].replace('\n', '')) # this line is to set the number of student in each trip (the number of student is formatted as integer) ...
#!usr/bin/python ###################################################################### # # Assignment 2 - Problem 4 # September 25th, 2013 # # Michael Musick # # Description: returns the avergae population of the user specified # borough # # Sample Input: python problem4.py "staten island" # #################...
import sys inputFile = open('input1.txt', 'r') # open .txt file inputLines = [] # save lines in a list for line in inputFile: inputLines.append(line) inputFile.close() """ Define a function that will take costs (as floats) as input and will print as o...
import sys def isJolly(x): targets = (len(x)-1)*[False] for i in range(1,len(x)): diff = abs(int(x[i-1])-int(x[i])) if diff<len(x) and diff>0 and not targets[diff-1]: #will not crash because first clause will evaluate first targets[diff-1]=True else: print "Not jolly" return print "Jolly" return ...
class Borough: name = None zipcodes = None populations = 0 populationcount = 0 average = 0 def __init__(self, name): self.name = name self.zipcodes = [] def addZipcode(self, zipcode): self.zipcodes.append(zipcode) def addPopulation(self, population): ...
#Kara Leary #Urban Informatics #Assignment 2 - Problem 2 import sys import csv #initialize variables for zip, population, area, density: currentZip = 0 currentPop = 0 currentArea = 0 populationDensity = 0 #set up a temporary list to hold unsorted values temparray = [] with open('zipCodes.csv') as f: rows = csv....
myFile=open('input4.txt','r')#read the input file and put all data into an array readdata=[] for line in myFile: line_lower=line.lower()#change the letters of the data to lowercase readdata.append(line_lower[:-1]) myFile.close readdata.append('')#add a space into the end of array to indicate the last case ends bla...
#Aliya Merali #Assignment 2 #Problem 1 import sys import datetime from dateutil import parser logfile = open('log_assignment1.txt','r') #Set the time limit to compare to from input value as an object in datetime dateInput = sys.argv[1].split('/') timeInput = sys.argv[2].split(':') dateTimeLimit = datetime.datetime(in...
import sys inputFile = open('input1.txt', 'r') inputFile.seek(0) thisLine = inputFile.readline() tripList = [] averageList = [] finalList = [] while thisLine != '0\n': thisTrip = [] numStudents = int(thisLine[:-1]) thisLine = inputFile.readline() for student in range(0, numStudents): thisTrip....
# !usr/bin/python ###################################################################### # # Assignment 5 - Problem 1a # November 24th, 2013 # # Michael Musick # # Description: Plot Apple Stock Prices # # Plotting Principles Used: # Improving Vision, Principle 1 - Reduce Clutter: # This was ma...
""" Note that this program accepts input on the command line *without* quotation marks. For example, one would type $ python problem1.py 10 20 and receive an output of 10 20 21 """ import sys input = (sys.argv) input.pop(0) first_parameter = int(input[0]) second_parameter = int(input[1]) """ The following func...
import sys max = 0 def test(n): if (n % 2 == 0): n = n/2 else: n = 3*n + 1 return n def cycle(n): global max count = 1 while n!= 1: n = test(n) count += 1 if (count > max): max = count i = int(sys.argv[1]) j = int(sys.argv[2]) for n in range(i, j+1): #print "Calculating Cycle of "+str...
# A script to take in a file of zipcodes with populations, calculate the density # and output those to a file, ignoring any zipcodes without a population figure # output is likely population per decimal degree, though it's not clear from the # source file what the units are. from _collections import defaultdict zipc...
#!usr/bin/python # Assignment 1 - Problem 2 # September 18th, 2013 #################################### # # sample input: # python problem2.py 6 1 -3 -6 -4 -3 # ################################### import sys # lib to get terminal input # print len(sys.argv) # test print # put the user supplied arguments into a lis...
#Katherine Elliott #ke638 #Assignment 3 Problem 3 inputFile = open("input3.txt", "r") num_scenarios = int(inputFile.readline()) for n in range (0, num_scenarios): PN = inputFile.readline().split() P = int(PN[0]) N = int(PN[1]) papers = [] for i in range (0, P): papers.append(inputFile.r...
import sys import numpy import matplotlib.pyplot as plt from sklearn import cross_validation, linear_model, datasets from random import shuffle """ First we open the text file and save the lines to the list input_lines """ inputfile = open('labeled_data.csv', 'r') input_lines = [] for line in inputfile: input_l...
import numpy import matplotlib.pyplot as plt """ The lists of values that we'll graph are: [13519.178949317729, 13247.82770615588, 13164.52846434755, 13405.996537917486, 14109.84815164765] [1515.2051976713724, 1536.1593441442926, 1662.8911854362129, 1925.7478724867913, 3262.5729874720264] [13492.142190458173, 13118.85...
#!usr/bin/python ###################################################################### # # Assignment 2 - Problem 2 # September 21th, 2013 # # Michael Musick # # Description: # ###################################################################### dbFile = open('zipCodes.csv', 'r') # create a dictionary zipDict...
import sys import borough as boroughClass boroughInput =sys.argv[0] boroughInput =boroughInput.title() boroughName= open ('boroughs.csv','r') zippop= open('zipCodes.csv','r') #setting the input as part of the boroughClass boroughObj= borough(boroughInput) #add the list of the zip codes to the boroughClass boroughDict=...
# -*- coding: utf-8 -*- """ Created on Thu Sep 12 15:18:57 2013 @author: yz1897 """ import sys # this solution should be faster in c, but in after i test #in python, the it get a little slower... def Longest_Cycle(i,j): longest=0 deleted=[-1 for k in range(j-i+1)] for n in range(j,i-1...
import sys import math input = open('input2.txt','r') value1 = input.readlines() value1 = value1[2:] break_arr = [] break_arr.append(0) z = 0 for call in value1: if call == "\n": break_arr.append(z+1) z = z + 1 break_arr.append(len(value1)) def candidates(x, win1): # Getting the list of candidate...
import sys import csv class Borough: name = None zipcodes = None numOfZip=None population=None def __init__(self, name): self.name = name self.zipcodes = [] self.numOfZip=0 self.population=0 def addZipcode(self, zip): self.zipcodes.append(zip) se...
#!/usr/local/bin/python #Warren Reed #Principles of Urban Informatics #Assignment 2, Problem 3 """ Creating ZipCodes Population Dictionary with key as zipcode and value as the population of that zipcode """ Pop_File = open('zipCodes_tr.csv','r') population_lines = [] for line in Pop_File: population_lines.appen...
#!/usr/local/bin/python #Warren Reed #Principles of Urban Informatics #Assignment 4, Problem 1 #Connects to MySQL and creates three tables to store the boroughs.csv, zipCodes, and incidents table. import MySQLdb import csv def incidentsToSql(cur,db): incidents_csv = csv.reader(open('Incidents_grouped_by_Address_...
#Nathan Seltzer #Homework 5 #Problem1c.py #import the neccessary modules and rename them import matplotlib.pyplot as plt import numpy as np import matplotlib.dates as mdates #the following import form pylab will allow me to use the subplot function from pylab import * #same as previous annotations f = open('stocks.d...
# Awais Malik # Assignment 2 # Problem 4 import sys import csv zipFile = open('zipCodes.csv','r') zipcodeList = csv.reader(zipFile) boroughFile = open('boroughs.csv','r') boroughList = csv.reader(boroughFile) boroughName = sys.argv[1].lower() zip = {} for line in boroughList: zip[line[0]] = [line[1]] ...
#!/usr/local/bin/python #Warren Reed #Principles of Urban Informatics #Assignment 4, Problem 2 #Connects to MySQL and computes the population density for a given zipcode import MySQLdb import sys def main(): inputZipcode = sys.argv[1] db = MySQLdb.connect(host="localhost", # your host, usually localhost ...
def find_location(string,matrix): # find the location of keyword location=[float("inf"),float("inf")] lineNum=len(matrix) colNum=len(matrix[0]) for i in range(len(matrix)): for j in range(len(matrix[i])): if matrix[i][j].lower()==string[0].lower(): lStr=string[0].low...
# TIM LEAVEY # SUPERHERO APP # This program does NOT used prepared statements, meaning it's vulnerable to SQL injections. # This was intentional as a lesson in what NOT to do. ;) import sys import sqlite3 # Initial welcome display for user print('Welcome to the superheroes archive!') print('1. Superheroes') print('2...
from datetime import date from lib.colors import red, green iteration_start = date(2021, 6, 16) iteration_end = date(2021, 9, 22) iteration_diff = iteration_end - iteration_start number_of_sprints = int(iteration_diff.days / 14) days_into_iteration = int((date.today() - iteration_start).days) current_sprint = int((day...
num=int(input("Enter 3 digit number ")) n1=num%10 n2=num//10%10 n3=num//100 print(f"{n1}{n2}{n3}")
import pandas as pd import matplotlib.pyplot as plt from sklearn import datasets from scipy.stats import pearsonr if __name__ == "__main__": boston = datasets.load_boston() boston = pd.DataFrame(data=boston.data, columns=boston.feature_names) print(boston) correlation, _ = pearsonr(boston["TAX"], bost...
from tkinter import * from PIL import Image, ImageTk from datastorage import Insert_user import sqlite3 conn = sqlite3.connect("users.db") c = conn.cursor() def credentials(): global font log = Tk() log.geometry("500x600") log.title("Fundit") log.configure(background="white") log.resizable(width=False, heigh...
from pieces import Piece import board class Rook(Piece): def __init__(self, color, type): Piece.__init__(self, color, type) def __str__(self): if(self.color == "W"): return "R" else: return "r" def scan(self): availMoves = [] ...
import pygame from pygame.locals import * from random import choice from copy import deepcopy NAME_OF_THE_GAME = "Tetris" BLOCK_SIZE = 30 def coord_in_px(coord): return (coord[0] * BLOCK_SIZE, coord[1] * BLOCK_SIZE) DRAW_SPOTLIGHT = True # the spotlight is a guide the width of the player that extends...
# initialize my_dict = {} # add item my_dict['name'] = 'brian' my_dict['state'] = 'florida' my_dict['age'] = 37 # access item print my_dict['name'] # change item my_dict['name'] = 'engineer man' # remove item by index del my_dict['state'] # iterate for k, v in my_dict.iteritems(): print k, '=>', v
import numpy as np import matplotlib.pyplot as plt # https://towardsdatascience.com/understanding-the-3-most-common-loss-functions-for-machine-learning-regression-23e0ef3e14d3 # MSE loss function def mse_loss(y_pred, y_true): squared_error = (y_pred - y_true) ** 2 sum_squared_error = np.sum(squared_error) ...
def exam_model(): # introduction print ('Welcome to the grade caluclator for you English, Science and Maths exams') print ('type you scores in and find out your grades') name=raw_input ('What is you name: ') english_score= input ('What was your exam score for English: ') maths_score=input ('What was your exam ...
import random stuff = ['water', 'food', 'sword'] party = ['you'] pos_x = 2 pos_y = 2 you_hp = 15.0 map_dungeon = ''' ---------------- | |__ | main room |__ outside == | | -----...
#python3 programe for bubble sort def bubbleSort(arr): n = len(arr) for i in range(n): swapped = False for j in range(0, n - i - 1): if arr[j] > arr[j + 1]: arr[j], arr[j + 1] = arr[j + 1], arr[j] swapped = True if swapped == False:...
#Python3 programe for deleting node from binary tree #Class for binary tree Node class Node: def __init__(self, data): self.data = data self.left = None self.right = None #Print inorder of binary tree def inorder(node): if not node: return inorder(node.left) print(node....
n = int(input("Introduzca un número positivo mayor o igual a 0: ")) #SOLICITA VALOR for i in range (1,n+1,1): #REPETIR N VECES print ("*",end="") #IMPRIMIR * SIN SALTO DE LINEA
#! python3 # zipBackup.py - Copies an entire folder and its contents into a ZIP file where the file name increments each time import zipfile, os def backupToZip(folder): #Back up entire folder to ZIP folder = os.path.abspath(folder) #Calculate version number number = 1 while True: zipFi...
#!/usr/bin/env python # -*- coding: utf-8 -*- # # cw-miesiące.py # def main(args): nazwy = ['styczen', 'luty', 'marzec', 'kwiecen', 'maj', 'czerwiec', 'lipiec', 'sierpien', 'wrzesien', 'pazdziernik', 'listopad', 'grudzien'] while 1 > 0: numer = int(input("Podaj numer miesiąca: ")) if 1 > numer > 12: ...
#Python 3.6.8 #author Karan Joshi from bs4 import BeautifulSoup import pandas from selenium import webdriver # Use https://github.com/mozilla/geckodriver/releases to install geckodriver on your python console import time driver=webdriver.Firefox() # Instantiating browser object page=driver.get("https://yourstory.co...
def palindrome(input): if input == "".join(reversed(input)): return True return False if __name__ == "__main__": user_in = input("Enter a string: ") print(palindrome(user_in))
''' Given an unsorted array of nonnegative integers, find a continous subarray which adds to a given number. ''' def getShortestSubArray(input_arr, k): shortest_length = -1 left_side = 0 right_side = 0 cur_sum = input_arr[0] while right_side < len(input_arr): if left_side > right_side: ...
''' Longest Substring Which contains K Unique Characters ''' def getLongestSubString(input_str): # Use a hashmap to store the index of each character, if finding duplicate the left side of window will start from there left_side = 0 right_side = 0 max_length = 1 max_left = 0 max_right = 0 ...
def integer_to_english_words(num): ret = "" billion = 1000000000 million = 1000000 thousand = 1000 n_to_english = { 1: 'One', 2: 'Two', 3: 'Three', 4: 'Four', 5: 'Five', 6: 'Six', 7: 'Seven', 8: 'Eight', 9: 'Nine', 10: '...
''' Input: [0,1,0,2,1,0,1,3,2,1,2,1] Output: 6 ''' class Solution(object): def trap(self, height): """ :type height: List[int] :rtype: int """ water = 0 left = 0 right = len(height) - 1 water = 0 while left < right: if height[left]...
#Advent of Code 2019 Day 1 Part 2: The Tyranny of the Rocket Equation fuelReq = [] def fuelCalc(mass): mass = int(mass) return mass//3-2 filepath = 'Day1.txt' with open (filepath) as masses: for mass in masses: fuel = fuelCalc(mass) fuelTotal = fuel while fuel > 0: fuel ...
from .exceptions import * import random # Complete with your own, just for fun :) LIST_OF_WORDS = [] def _get_random_word(list_of_words): if list_of_words == []: raise InvalidListOfWordsException else: return random.choice(list_of_words) def _mask_word(word): if len(word) == 0: ...
#! /usr/bin/env python3 def fuel(amt): return (amt//3) - 2 def all_fuel(amt): num = fuel(amt) sub = 0 while num > 0: sub += num num = fuel(num) return sub total = 0 with open("input") as f: for line in f: total += all_fuel(int(line)) print(total)
# Multiples # Part I - Write code that prints all the odd numbers from 1 to 1000. Use the for loop and don't use a list to do this exercise. number = range(0,100) for i in number: if i%2!=0: print i # Part II - Create another program that prints all the multiples of 5 from 5 to 1,000,000. number = range(...
# -*- coding: utf-8 -*- """ Spyder Editor This is a temporary script file. """ import random def play(): a = random.randint(0,20) #a adalah bilangan random yg akan ditebak #print("contoh angka random: ",a) score = 100 b=11 #b adalah angka yg akan ditebak, b=11 inisiasi awal aja tebaka...
#!/usr/local/bin/python3 # Python class to implement a Kalman Filter import numpy as np import matplotlib.pyplot as plt from random import random from math import * class kalman(): # Init assuming 2d problem with no control input or process noise def __init__(self, t0, dx): self.t = t0 # Me...
l = [1,2,3] l.append(4) l.count(2) x = [1,2,3] x.append([4,5]) # appends the entire element to the list, list in a list # if you want to add to the list, use extend x.extend([4,5]) l.index(2) # two arguments: index, object l.insert(2,'inserted') ele = l.pop() # pop always last element, but can add index l.remove...
class Animal(): def __init__(self): print('Animal created') def who_am_i(self): print('I am an animal') def eat(self): print('I am eating') #myanimal = Animal() #print(myanimal.eat()) class Dog(Animal): #Derived class def __init__(self): Animal.__init__(self) print('Dog created') ...
def myfunc(): print('Hello World') def myfunc(Name): print('Hello {}'.format(Name)) def myfunc(s): if s == True: return 'Hello' if s == False: return 'Goodbye' def myfunc(x, y, z): if z == True: return x if z == False: return y def myfunc(a, b): return a+b...
class Account: def __init__(self, owner, balance=0): self.owner = owner self.balance = balance def deposit(self, amount): self.balance += amount print(f"Deposit of {amount} accepted.") def withdraw(self, amount): if self.balance >= amount: self.balance -= amount print(f"Withdraw...
""" Write a Python program that matches a string that has an a followed by three 'b'. """ import re def is_match(text): pattern = ("ab{3}") if re.search(pattern, text): return "Match found!" else: return "Match not found" print(is_match("a"))
""" you get a sorted list and need to find the first and last appearence of a certain number in the list and return the indices example if input is 1, 3, 3, 5, 7, 8, 9, 9, 15 if asked for 9 the indicie range is 6-9 lets do it in sub-linear time """ #this is binary search to solve it class Range: def Get...
#this is for adding a functionality for the stack which will return the maximum number class Max(object): def __init__(self): self.stack = [] self.maxs = [] def push(self, val): self.stack.append(val); if self.maxs and self.maxs[-1] > val: self.maxs.appe...
'''Creating the functionality for the application In this file, we are going to create the functionality for our application. There are multiple functionality. Functionalities: 1. signup 2. login 3. add_events 4. show_events 5. remove_events 6. add_participants 7. show_participants 8. remove_participants '...
# 18. Read in some text from a corpus, tokenize it, and print the list of all wh-word types that occur. (wh-words in English are used in questions, relative clauses and exclamations: who, which, what, and so on.) Print them in order. Are any words duplicated in this list, because of the presence of case distinctions or...
list = [2, 4, 6, 8 ,10] for item in list[0:3]: print(item) list2 = ["Gustavo", "Costa"] for name in list2: if not name == "Gustavo": print(name)
#!/usr/bin/env python3 import numpy as np import cv2 import matplotlib.pyplot as plt from VO import MonoVo as VO import os classes = ['background', 'aeroplane', 'bicycle', 'bird', 'boat', 'bottle', 'bus', 'car', 'cat', 'chair', 'cow', 'diningtable', 'dog', 'horse', 'motorbike', 'person', 'potte...
x = input("enter list 1:") y = input("enter list 2: ") comb = len(x) + len(y) if comb % 3 == 0 and comb % 5 == 0: print("fizzbuzz") elif comb % 3 == 0: print("Fizz") elif comb % 5 == 0: print("Buzz") else: print(comb)
class dog: species = "mamal" def __init__(self, sound_made): self.sound_made = sound_made def sound(self): print(self.sound_made) def bite(self): self.sound_made() print("bite") def identify_yourself(): print("i am a" + self.species) my_dog = dog(...
txt = str(input("Enter any word: ")) text = txt[1::] print(txt) text = text + txt[0] cyrus = ("ay") print(text + "ay")
# tuples # tuples are immutable # tuples are ordered collection of data # tuples can store any data type # you cannot change(add or delete) values from tuple once it created # but can add, delete data from list which is present inside tuples mixed = (1,2,3,4,5,'six') # no append, no pop, no insert, no remove # only co...
# check empty or not # important name = input("enter name = ") if name: # true is string is not empty print(f"your name is {name}") else: print("you did'nt type anything")
# fromkeys() - used to create dictionaries :- # d = {'name' : 'unknown', 'age' : 'unknown'} # d = dict.fromkeys(['name', 'age', 'dob'], 'unknown') # print(d) # get() method (useful):- to handls errors we use get() method d = {'name' : 'harshit', 'age' : 24} # print(d['dob']) # gives error because 'dob' key is not p...
# sum : 1 to 10 (or any number) total = 0 i = 1 # i = 2 while i <= 10: total = total + i i = i + 1 print(total) # total = 0 + 1
# will discuss three problems in existing # then we will solve them using getter , setter decorator class Phone: def __init__(self, brand, model_name, price): self.brand = brand self.model_name = model_name self._price = max(price,0) @property def complete_specific(self):...
. center(lenght of string, '*') . replace(" " , "_") # replace ' ' by '_' . replace("is" , "was" , 1) # replace 1 'is' if 2 then replaces two 'is . find("is")) # finds the position of is o/p = 4' . find("is",skip the first 'is') . str() . split(",") . len() ...
# common elements finder function # define a function which takes two lists as input and return a list # which conatins common elemetns of both lists # example # input ---> [1,2,5,8], [1,2,7,6] # output ---> [1,2] def common_elements(list1, list2): common_list = [] for i in list1: if i in list2: ...
# compare list # == , is fruits1 = ['orange', 'apple', 'pear'] fruits3 = ['orange', 'apple', 'pear'] fruits2 = ['banana', 'kiwi', 'apple', 'banana'] print(fruits1 == fruits3) # values are same print(fruits1 is fruits3) # false
# some more mehods to add data in out list # insert method # how to join(concatenate) two list # extend method # difference between append and extend methods fruits1 = ['mango', 'orange'] # fruits1.insert(1, "grapes") # print(fruits1) fruits2 = ["grapes", "apple"] # fruits = fruits1 + fruits2 # print(fruits) fruits1...
# lambda expressions (anonymous function) def add(a,b): return a+b add2 = lambda a,b : a+b print(add2(2,3)) # built in, map , reduce multiply = lambda a,b : a*b print(multiply(2,3))
# class methods # difference between class methods and instance methods class Person: count_instance = 0 # class variable / class attribute def __init__(self, first_name): Person.count_instance = Person.count_instance + 1 self.first_name = first_name @classmethod def count_i...