code in pythonfa

$)$

$$Write a list comprehension that returns all tuples

$($

a

$,$

b

$,$

c

$,$

d

$)$

$,$

$$with a

$,$

b

$,$

c

$,$

d distinct integers, such that

$1$

$<$

$=$

a

$,$

b

$,$

c

$,$

d

$<$

$=$

$1$

$0$

$,$

$$and a

$2$

$+$

b

$2$

$=$

c

$2$

$+$

$$d

$2$

$.$

b

$)$

$$Consider a list of strings, like this:

$[$

$\text{'}$

One

$\text{'}$

$,$

$\text{'}$SEVEN$\text{'},$ 'three', 'two', 'Ten'

$]$

$.$

$$Write a list comprehension

that produces a list with tuples where the first element of the tuple is lowercase version of a string in

the initial list, the second element of the tuple is the length of the element of the initial list, and the

resulting list contains only tuples for strings with the length shorter than five characters.

For our example the list comprehension should return

$[$

$($

$$

one

$$

$,$

$3$

$)$

$,$

$($

$$

two

$$

$,$

$3$

$)$

$,$

$\text{'}$ten$\text{'},$

$3$

$)$

$]$

$.$

c

$)$

$$Consider a list of full names formatted

$$

Firstname Middlename Lastname

$$

$,$

$$like this:

names

$=$

$[$

$\text{'}$

Christopher Ashton Kutcher', 'Elizabeth Stamatina Fey'

$]$

Write a list comprehension that produces a list with the full names in this format:

$$

Firstname M

$.$

Lastname

$$

$.$

$$The resulting list should look like

$[$

$\text{'}$

Christopher A

$.$

$$Kutcher$\text{'},$ 'Elizabeth S

$.$

$$Fey$\text{'}$

$]$

$.$

$$The list

comprehension should work for any list names with the proper format.

d

$)$

$$Consider these two lists of strings:

lst

$1$

$=$

$[$

$"$

Spam

$"$

$,$

$"$Trams$",$ "Elbows", "Tops", "Astral"

$]$

lst

$2$

$=$

$[$

$"$

Bowels

$"$

$,$

$"$Sample$",$ "Altars", "Stop", "Course", "Smart"

$]$

Write a list comprehension that returns a list of tuples

$($

w

$1$

$,$

$$w

$2$

$)$

$$where w

$1$

$$is from lst

$1$

$$and w

$2$

$$is from

lst

$2$

$$and w

$1$

$$and w

$2$

$$are anagrams

$($

case insensitive

$)$

$.$

For the lists above, the anagram pairs are in this list:

$[$

$($

$\text{'}$

Trams

$\text{'}$

$,$

$\text{'}$Smart$\text{'}$

$)$

$,$

$($

$\text{'}$

Elbows

$\text{'}$

$,$

$\text{'}$Bowels$\text{'}$

$)$

$,$

$($

$\text{'}$

Tops

$\text{'}$

$,$

$\text{'}$Stop$\text{'}$

$)$

$,$

$($

$\text{'}$

Astral

$\text{'}$

$,$

$\text{'}$Altars$\text{'}$

$)$

$]$

e

$)$

$$Consider a list of distinct strings like this one:

s

$=$

$[$

$\text{'}$

one

$\text{'}$

$,$

$\text{'}$two$\text{'},$ 'three'

$]$

Write a dictionary comprehension that returns a dictionary that maps each string from s to its length.

Example:

$\{$

$\text{'}$

one

$\text{'}$

:

$3$

$,$

$\text{'}$two$\text{'}$:

$3$

$,$

$\text{'}$three$\text{'}$:

$5$

$\}$

f

$)$

$$Write a dictionary comprehension that uses a string in a variable called text and that returns a

dictionary with entries i:c where i is the index of character c in text only for characters c that are vowels

$($

a e i o u

$)$

$.$

$$Checking for vowels is case insensitive.

Example: text

$=$

$"$Hello world"

The resulting dictionary is

$\{$

$1$

:

$\text{'}$

e

$\text{'}$

$,$

$4$

:

$\text{'}$

o

$\text{'}$

$,$

$7$

:

$\text{'}$

o

$\text{'}$

$\}$

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