Py Modules

Question 1

How to import a module?

Answer 1

> > Import

Question 2

Name 4 useful modules?

Answer 2

collections ( counter ), random, math, webbrowser

Question 3

How can a random integer be created?

Answer 3

]] from random  import seed
]] from random  import random
]] seed(  )
]] print( random(), random() )
]]0.7215400323407826 0.22876222127045265 

– the function random will consistently generate the same random numbers every time

https://machinelearningmastery.com/how-to-generate-random-numbers-in-python/

Question 4

Dict, what’s the difference between a dictionary and a list?

Answer 4

Dictionary store key, value pairs, whereas lists are a range of values

Question 5

How do you find out if an object is a dictionary or not?

Answer 5

.type( )

Question 6

How would you express a dictionary’s structure?

Answer 6

{ key:value, key:value }

Question 7

Do you know of any rules for dictionary’s keys?

Answer 7

Immutable, can’t be a list for the key but can be used for the value, not ordered

Question 8

How to add a single new value to a dictionary?

Answer 8

]] [ ‘key’ ] = ‘value’

]] t1_dict[ ‘abc’ ] = 99

Question 9

How to see all pairs in a dictionary?

Answer 9

]] < dict_name >
or
]] < dict_name >.items( )

Question 10

1) How to see all keys in dictionary?

2) How to see all values for a dictionary?

Answer 10

]] .keys( )

]] .values( ) `

Question 11

Value in Dict or List, how to check if a specific value is in a dict or a list?

– ERROR: needs to be updated –

Answer 11

]] if in

– recturns True or False

– WRONG –

Question 12

Value in Dict, how to fetch a specific value from a Dict?

Answer 12

]] .get( ‘key’ )

• • returns pair’s value
• • changed from True or False

Question 13

how to compare two textstrings similiarity?

Answer 13

]] import difflib
]] difflib.get_close_matches( ‘word_to_compare’, [ ‘words’, ‘‘in, ‘‘list, ‘to’, ‘compare’, ‘against’], 1, 0.6 )

• • 1: how many words to return as a close match
• • 2: ratio to be fulfilled for the words to return

Question 14

how to find the ratio of similarity between two textstrings?

Answer 14

]] difflib.SequenceMatcher( None, ‘word_comp_1’, ‘word_comp_2’).ratio()

Question 15

how to see all installed modules?

Answer 15

]] help( ‘modules’ )