Output of python program | Set 12(Lists and Tuples) - GeeksforGeeks

11 Mar, 2022
Prerequisite: List and Tuples Note: Output of all these programs is tested on Python3
1) What is the output of the following program? 
PYTHON
L1 = []L1.append([1, [2, 3], 4])L1.extend([7, 8, 9])print(L1[0][1][1] + L1[2])
a) Type Error: can only concatenate list (not “int”) to list b) 12 c) 11 d) 38 
Ans: (c) 
Explanation: In the print(), indexing is used. L1[0] denotes [1, [2, 3], 4], L1[0][1] denotes [2, 3], 
L1[0][1][1] = 3 and L1[2] = 8. Thus, the two integers are added, 3 + 8 = 11 and output comes as 11.
2) What is the output of the following program? 
PYTHON
L1 = [1, 1.33, 'GFG', 0, 'NO', None, 'G', True]val1, val2 = 0, ''for x in L1:    if(type(x) == int or type(x) == float):        val1 += x    else if(type(x) == str):        val2 += x    else:        breakprint(val1, val2)
a) 2 GFGNO b) 2.33 GFGNOG c) 2.33 GFGNONoneGTrue d) 2.33 GFGNO 
Ans: (d) 
Explanation: val1 will only have integer and floating values val1 = 1 + 1.33 + 0 = 2.33 and val2 will have string
             values val2 ='GFG' + 'NO' = 'GFGNO'. String 'G' will not be part of val2 as the for loop will break at None,
             thus 'G' will not be added to val2.
3) What is the output of the following program? 
Python3
L1 = [1, 2, 3, 4]L2 = L1L3 = L1.copy()L4 = L3L1[0] = [5]print(L1, L2, L3, L4)
a) [5, 2, 3, 4] [5, 2, 3, 4] [1, 2, 3, 4] [1, 2, 3, 4] b) [[5], 2, 3, 4] [[5], 2, 3, 4] [[5], 2, 3, 4] [1, 2, 3, 4] c) [5, 2, 3, 4] [5, 2, 3, 4] [5, 2, 3, 4] [1, 2, 3, 4] d) [[5], 2, 3, 4] [[5], 2, 3, 4] [1, 2, 3, 4] [1, 2, 3, 4] 
Ans: (d) 
Explanation: L2 is the reference pointing to the same object as L1,
             while L3 and L4 are single recursive Copy(Shallow Copy) of List L1.
             L1[0] = [5], implies that at index 0, list [5] will be present and not integer value 5.
4) What is the output of the following program?  
PYTHON
import sysL1 = tuple()print(sys.getsizeof(L1), end = " ")L1 = (1, 2)print(sys.getsizeof(L1), end = " ")L1 = (1, 3, (4, 5))print(sys.getsizeof(L1), end = " ")L1 = (1, 2, 3, 4, 5, [3, 4], 'p', '8', 9.777, (1, 3))print(sys.getsizeof(L1))
a) 0 2 3 10 b) 32 34 35 42 c) 48 64 72 128 d) 48 144 192 480 
Ans: (c) 
Explanation: An Empty Tuple has 48 Bytes as Overhead size and each additional element requires 8 Bytes. 
(1, 2) Size: 48 + 2 * 8 = 64 
(1, 3, (4, 5)) Size: 48 + 3 * 8 = 72 
(1, 2, 3, 4, 5, [3, 4], 'p', '8', 9.777, (1, 3)) Size: 48 + 10 * 8 = 128 
5) What is the output of the following program?  
PYTHON
T1 = (1)T2 = (3, 4)T1 += 5print(T1)print(T1 + T2)
a) TypeError b) (1, 5, 3, 4) c) 1 TypeError d) 6 TypeError 
Ans: (d) 
Explanation: T1 is an integer while T2 is tuple. Thus T1 will become 1 + 5 = 6. But an integer and tuple cannot be added, it will throw TypeError.
This article is contributed by Piyush Doorwar. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks. Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above. 
ManasChhabra2
RajuKumar19
aryan521970
aliabbas4k12
simmytarika5
python-list
Python-Output
python-tuple
Program Output
python-list
Writing code in comment?
Please use ide.geeksforgeeks.org,
generate link and share the link here.
Output of Java program | Set 18 (Overriding)
Output of Java Program | Set 11
Output of Java programs | Set 13 (Collections)
Output of C++ programs | Set 34 (File Handling)
Different ways to copy a string in C/C++
Output of Java Program | Set 3
Runtime Errors
Output of Java program | Set 28
Output of Java program | Set 5
Output of Java Programs | Set 12