Python 2D Lists Flashcard

Python 2D Lists Flashcard

Assessment

Flashcard

Computers

10th Grade

Practice Problem

Hard

Created by

Wayground Content

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16 questions

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1.

FLASHCARD QUESTION

Front

How do you access the element in the second row and third column of a 2D list `matrix`? Options: `matrix[1][2]`, `matrix[2][3]`, `matrix[2][1]`, `matrix[3][2]`

Back

`matrix[1][2]`

2.

FLASHCARD QUESTION

Front

How can you modify the value of the first element in the first row of a 2D list `matrix` to 5? Options: `matrix[0][0] = 5`, `matrix[1][1] = 5`, `matrix[0] = 5`, `matrix = 5`

Back

`matrix[0][0] = 5`

3.

FLASHCARD QUESTION

Front

What will be the output of the following code snippet if `matrix = [[1, 2], [3, 4]]`?
```python
print(matrix[1][1])
```

Back

`4`

4.

FLASHCARD QUESTION

Front

Which of the following is a valid 2D list in Python? Options: `[[1, 2, 3], [4, 5], [6]]`, `[[1, 2], 3, [4, 5]]`, `[[1], [2, 3], 4]`, `[[1] [2] [3]]`

Back

`[[1, 2, 3], [4, 5], [6]]`

5.

FLASHCARD QUESTION

Front

How can you add a new row `[5, 6, 7]` to an existing 2D list `matrix`? Options: `matrix.append(5, 6, 7)`, `matrix.append([5, 6, 7])`, `matrix += [5, 6, 7]`, `matrix.insert(len(matrix), [5, 6, 7])`

Back

`matrix.append([5, 6, 7])`

6.

FLASHCARD QUESTION

Front

What error is raised when trying to access an element in a 2D list with an index that is out of range?

Back

IndexError

7.

FLASHCARD QUESTION

Front

How do you remove the last row from a 2D list `matrix`? Options: matrix[-1].delete(), `matrix.pop()`, `matrix.remove(-1)`, Both A) and B) are correct

Back

`matrix.pop()`

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