Exam 2 Conceptual Review Session

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What method can be called on a list to add an item?

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33 Terms

1

What method can be called on a list to add an item?

.append()

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2

Which datatype is accessed with the .items() method?

dict

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3

What characteristic means that elements can be changed in a datatype?

Mutable

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4

Are tuples indexed?

YES

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5

Which datatype is known to be ordered?

List

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6

What method counts the occurrences of an item in a tuple?

.count(item)

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7

What will myList[0] return if myList = [1,2,3]?

1

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8

Are dictionary keys mutable?

NO

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9

How do you access a value in a dictionary?

By using the key, e.g., myDict[key]

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10

What method can be called on a string to remove whitespace?

.strip(chars)

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11

What does the .split() method do in Python?

Splits a string into a list based on a separator.

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12

What will be the return value of sorted() when a list is passed?

A sorted list without modifying the original.

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13

How do you check if an item is in a list?

Using the 'in' keyword.

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14

What is the primary way to add an item to a list?

.append()

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15

What is the output of the statement myList.reverse()?

None; it modifies the original list.

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16

What occurs if you attempt to call index on a value not found in a list?

An error is thrown.

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17

Are dictionary values mutable?

YES

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18

What does tuple unpacking allow you to do?

Assign variables to values directly from a tuple.

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19

What will 'del myList[0]' do?

Delete the first element of myList.

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20

What does the random module's .random() function return?

A random float between [0,1).

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21

Which method returns the index of an item in a tuple?

.index(item)

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22

What happens in tuple packing?

Values are packed into the tuple.

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23

How are dictionaries used to count letter occurrences?

By incrementing the count for each letter in a looping structure.

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24

What is the significance of using the import statement before a module?

It allows access to the functions and variables defined in that module.

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25

What happens when you try to add duplicate keys to a dictionary?

Only the last assignment to the key will be kept.

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26

What is unique about the elements in a dictionary?

Keys must be unique.

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27

What is a key characteristic of lists in Python?

They are mutable.

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28

What will myTuple[0] return if myTuple = (1,2,3)?

1

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29

What does the range function return?

A sequence of numbers in a specified range.

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30

To mutate items in a tuple, what must be done?

You must create a new tuple.

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31

What is the purpose of the .replace() method in strings?

To return a new string with specified substrings replaced.

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32

What are the characteristics of a dictionary?

Keys are unique and values can be mutable.

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33

How to check if two items are identical?

Use '==' operator.

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