Working with External Libraries

Question 1

Math is a what?

Answer 1

Module

Question 2

A collection of variables defined by someone else

Answer 2

Module

Question 3

You can see all the names in math using the built in function what?

Answer 3

dir()

Question 4

What does the math.log() function do?

Answer 4

Returns the natural logarithm of a number, or the logarithm of number to base

Question 5

It is common convention to import numpy as what?

Answer 5

np

Question 6

It is a common convention to import pandas as what?

Answer 6

pd

Question 7

Name some popular libraries.

Answer 7

Pandas
Numpy
Tensorflow
Matplotlib

Question 8

Only import specific things you’ll need from each module

Answer 8

from math import log, pi
from numpy import asarray

Question 9

Name the graphing library

Answer 9

mathplotlib

Question 10

What do pandas functions give you?

Answer 10

DataFrames & Series

Question 11

Subplots, Figures, TickMarks and Annotations are from what library?

Answer 11

matplotlib

Question 12

To find out ‘what is this thing?’ use what?

Answer 12

type()

Question 13

To find out ‘what can I do with it?’ use what?

Answer 13

dir()

Question 14

I want to turn the array into a list… what should I use?

Answer 14

“tolist”

rolls.tolist()

Question 15

Can you add a number to each element of an array?

Answer 15

Yes

Question 16

What Python library is popularly used for deep learning?

Answer 16

Tensorflow

Question 17

It is common convention to import tensorflow as what?

Answer 17

tf

Question 18

How would you make the y-axis begin at 0?

Answer 18

graph.set_ylim(bottom=0)

Question 19

How would you label the y-axis?

Answer 19

graph.set_ylabel(“Balance”)

Question 20

How would you set an array of the values displayed on the y-axis?

Answer 20

ticks = graph.get_yticks()

Question 21

How would you format those values into strings beginning with a dollar sign?

Answer 21

new_labels = [‘${}’. format(int(amt)) for amt in ticks]

Question 22

Sets the y-axis limits for the current axes or chart

Answer 22

ylim