1+ '''
2+ Given a list of N numbers, use a single list comprehension to produce a new list that only contains those values that are:
3+ (a) even numbers, and
4+ (b) from elements in the original list that had even indices
5+ For example, if list[2] contains a value that is even, that value should be included in the new list,
6+ since it is also at an even index (i.e., 2) in the original list.
7+ However, if list[3] contains an even number, that number should not be included in the new list since
8+ it is at an odd index (i.e., 3) in the original list.
9+ '''
10+ 11+ def EvenNumEvenIndex (someList ):
12+ if type (someList ) is not list :
13+ print ("Invalid user input" )
14+ if len (someList ) == 0 :
15+ print ("No value in the list" )
16+ 17+ dummyList = []
18+ for num in someList :
19+ if someList .index (num ) % 2 == 0 and num % 2 == 0 :
20+ dummyList .append (int (num ))
21+ return dummyList
22+ 23+ 24+ def getUserInput ():
25+ listOfIntNum = []
26+ listOfFloatNum = []
27+ 28+ inputList = input ("Enter list of nunmbers: " )
29+ inputList = inputList .split (" " )
30+ 31+ if inputList :
32+ for value in inputList :
33+ # try:
34+ # if isinstance(int(value),int):
35+ # listOfNum.append(int(value))
36+ # continue
37+ # if isinstance(float(value),float):
38+ # listOfNum.append(float(value))
39+ # continue
40+ # # if type(int(value)) == int:
41+ # # listOfNum.append(int(value))
42+ # # continue
43+ # # if type(int(float(value))) == int:
44+ # # listOfNum.append(int(float(value)))
45+ # # continue
46+ # except ValueError:
47+ # pass
48+ 49+ if '.' in value :
50+ # possible that, value can be a floating number or a sentence with full stop.
51+ try :
52+ if isinstance (float (value ), float ):
53+ listOfFloatNum .append (float (value ))
54+ continue
55+ except ValueError as e :
56+ pass
57+ try :
58+ if isinstance (int (value ), int ):
59+ listOfIntNum .append (int (value ))
60+ except ValueError as e :
61+ pass
62+ 63+ 64+ return listOfIntNum + listOfFloatNum
65+ 66+ if __name__ == "__main__" :
67+ numList = getUserInput ()
68+ print (numList )
69+ print (EvenNumEvenIndex (numList ))
0 commit comments