Lists, Tuples and Dictionaries

Question 1

what are lists?

Answer 1

collection of different types of elements within square brackets

Question 2

list operators?

Answer 2

concatenation, repetition, membership

Question 3

append()

Answer 3

adds new element to last in list

Question 4

extend()

Answer 4

extends existing list to another list

Question 5

insert()

Answer 5

Inserts element based on index number

Question 6

pop()

Answer 6

removes element based on index number

Question 7

reverse()

Answer 7

reverses a list

Question 8

sort()

Answer 8

sorts list in ascending order ( Looking at starting alphabets)

Question 9

sorted()

Answer 9

does the same thing as sort but wont change the list

Question 10

min() and max()

Answer 10

gives maximum and minimum values in list

Question 11

sum()

Answer 11

sum of elements in list

Question 12

nested list?

Answer 12

list containing another list inside

Question 13

What are tuples?

Answer 13

collection of different types of data within curved brackets they are immutable

Question 14

packing and unpacking tuple means?

Answer 14

T= (1,2,3,4) → packed
a,b,c,d= (1,2,3,4)→unpacked
print(a) #1

Question 15

what are dictionaries?

Answer 15

key:value pair withiin flower brackets
keys cant be similar but values can

Question 16

keys()

Answer 16

Marks{“maths”:100, “physics”:100, “chemistry”:100}

print(Marks.keys())
prints all keys

Question 17

values()

Answer 17

prints all values

Question 18

items()

Answer 18

prints all items in dictionary

Question 19

get()

Answer 19

gets specified value for key

Question 20

update()

Answer 20

merges a dictionary with another
print(D1.update(D2))
puts D2 in D1

Question 21

del()

Answer 21

deletes element with its key

Question 22

clear()

Answer 22

removes everything if you print then you will get empty dictionary