AbdurCodes

It can perform arithmetic operations on two numbers at a time... x = int ( input ( "enter 1st number: " )) y = input ( "What you want to do? " ) z = int ( input ( "enter 2nd number: " )) if y == "+" :     print ( x + z ) elif y == "-" :     print ( x - z ) elif y == "*" :     print ( x * z ) elif y == "/" :     print ( x / z )

a , b = 3 , 4 d = lambda a , b : a + b c = d ( a , b ) print ( c ) Result = 7

In mathematics, the Fibonacci numbers form a sequence, the Fibonacci sequence, in which each number is the sum of the two preceding ones. The sequence commonly starts from 0 and 1, although some authors omit the initial terms and start the sequence from 1 and 1 or from 1 and 2.  Starting from 0 and 1, the next few values in the sequence are: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, ... n = int ( input ( "Number(N) of elements in fiboSeries (N>=2): \n " )) fiboSeries = [ 0 , 1 ] if n > 2 :     for i in range ( 2 , n ):         nextElement = fiboSeries [ i - 1 ] + fiboSeries [ i - 2 ]         fiboSeries . append ( nextElement ) print ( fiboSeries )      

 The generator function uses the 'yield' keyword. mylist = [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ] def eo ():     for item in mylist :         if item % 2 == 0 :             yield f " { item } is even"         else :             yield f " { item } is odd"             for i in eo ():     print ( i )  

  def countdown ( n ):     while n > 0 :         print ( n )         n -= 1 countdown ( 6 )

 Creating a DataFrame by using a dictionary: familyDict = {     "Names" : [ "Rehman" , "Wadud" , "Wahab" , "Aasia" , "Memoona" ],     "Age" : [ 35 , 26 , 30 , 24 , 39 ],     "Qualification" : [ "Pharm-D" , "B-Tech" , "Civil" , "BA" , "Islamyat" ],     "Relation" : [ "Son" , "Son" , "Son" , "Daughter" , "Daughter" ],     "Status" : [ "Married" , "Married" , "Married" , "Married" , "Married" ]     } import pandas as pd family_table = pd . DataFrame ( familyDict ) family_table . index = [ 1 , 2 , 3 , 4 , 5 ] # changes the index pattern of the table print ( family_table ) Creating a DataFrame by importing a CSV file using Pandas import pandas as pd notes = pd . read_csv ( "CSV-notes.csv" ) print ( notes )

  height = [ 1.87 ,   1.87 , 1.82 , 1.91 , 1.90 , 1.97 ] weight = [ 81.65 , 97.52 , 95.25 , 92.98 , 86.18 , 82.65 ] import numpy as np np_height = np . array ( height ) np_weight = np . array ( weight ) bmi = np_weight / np_height ** 2 print(bmi) print ( bmi > 23 ) # returns boolean values print(bmi[ bmi > 23 ]) # returns bmi with values > 23

mydict = {     "table" : "wood" ,     "bangle" : "gold" ,     "window" : "glass" ,     "body" : "mud" ,     "shopper" : "plastic" ,     "protein" : "amino acids" } del mydict [ "protein" ] or mydict . pop ( " protein " ) mydict [ "feminine" ] = "love"  

Python dictionaries are iterables. mydict = {     "table" : "wood" ,     "bangle" : "gold" ,     "window" : "glass" ,     "body" : "mud" ,     "shopper" : "plastic" ,     "protein" : "amino acids" } for item , material in mydict . items ():     print ( f "The { item } is made out of { material } ." ) Result: The table is made out of wood. The bangle is made out of gold. The window is made out of glass. The body is made out of mud. The shopper is made out of plastic. The protein is made out of amino acids.  

The split method splits the string into a bunch of strings grouped together in a list . name = "abdur rehman" name = name . split ( " " ) print ( name ) Result: ['abdur', 'rehman']

  name = "abdur" print ( name [::- 1 ]) Result: rudba

  tup = ( "Abdur" , 35 , "coder" , 4.5 ) scr = "Hi this is %s aged %s . I am %s by profession and i have %s years of work experience." print ( scr % tup )

name = "Abdur" age = 35 print ( "Hello %s !" % name ) #  %s used for strings print ( "Age is %d " % age )   #  %d used for numbers print ( " %s is %d years old." %( name , age )) print ( "Hello {} !" . format ( name )) print ( f "Hello { name } !" )  

The following code will sum all the numbers in the list called 'a'.  sum = lambda a , b : a + b a = [ 1 , 2 , 3 , 4 , 15 ] from functools import reduce b = reduce ( sum , a ) print ( b ) The following code will return the maximum number from a list of numbers; mylst = [ 1 , 2 , 3 , 4 , 5 ,6 6 , 7 , 8 , 9 ]     from functools import reduce b = reduce ( max , mylst ) print ( b ) Result = 66

 Syntax: map(function, list) def cube ( num ):     return num * num * num # method 01 l1 = [ 2 , 4 , 6 ] l2 = [] for item in l1 :     l2 . append ( cube ( item ))     print ( l2 ) # method 02 print ( list ( map ( cube , l1 )))

  def name ( item ):     if item == "abdur" :         return True     else :         return False     list1 = [ "abdur" , "michael" , "vikky" ]   b = list ( filter ( name , list1 )) print ( b )

 This is the older method to write f "string" num = 44 name = "Ronaldo" career = "10 years" print ( "The player {} whose assigned number is {} is playing football since {} " . format ( name , num , career ))

 Join method in Python applied on a list of names: mylist = [ "abdur" , "rehman" , "qadeer" , "cats" , "dogs" ] oneLiner = " & " . join ( mylist ) print ( oneLiner ) The above code returns the following; abdur & rehman & qadeer & cats & dogs  Join method in Python applied on a list of numbers: mylist = [ str ( i * 7 ) for i in range ( 1 , 11 )] mylist = [7, 14, 21, 28, 35, 42, 49, 56, 63, 70] newlist = " \n " . join ( mylist ) print ( newlist ) The above code returns the following; 7 14 21 28 35 42 49 56 63 70

 Defining a function in a single line in Python multiply = lambda a , b : a * b sum = lambda a , b : a + b div = lambda a , b : a / b subt = lambda a , b : a - b square = lambda a : a ** 2 cube = lambda a : a ** 3   sqrt = lambda a : a ** 0.5 print ( multiply ( 2 , 3 )) print ( sum ( 2 , 3 )) print ( div ( 2 , 3 )) print ( subt ( 2 , 3 )) print ( square ( 2 )) print ( cube ( 2 )) print ( sqrt ( 9 ))

  tableOf = int ( input ( "Which table? " )) list = [ tableOf * i for i in range ( 1 , 11 )] print ( list )

The following program will print the 1st, 3rd and 5th elements of the list only. list = [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 ] for index , item in enumerate ( list ):     if index == 0 or index == 2 or index == 4 :         print ( index , item )