Question #$1$

Using Python's string capabilities, loops, and built$-$in functions,

write the code for a Python user$-$defined function that removes all characters

from a string except digit characters.

The function returns the resultant string.

The function prototype MUST be: def digits$\_$only$($s$)$

See table below for examples of the original and resultant strings.

Original $($s$)$:

"how many seas are there? $7""7"$

$"$In $1990$ Guido Van Rossum invented Python!" $"1990"$

$"$no digits in this string"

"who is the #$1$ team in the nhl in $2024?""12024"$

Question #$2$

Using Python's string capabilities, loops, lists, and built$-$in functions,

write the code for a Python user$-$defined function that displays

$\text{'}n\text{'}$ rows of a Fibonacci sequence!

The function prototype MUST be: def draw$\_$fibonacci$($n$)$

A Fibonacci sequence begins with the values $$ and $1$ and each subsequent

term in the sequence is comprised of the sum of the $2$ previous terms.

Each new value to display is separated from the previous value by a space and

then the expression "ratio: n$.$xxxxxx$"($where $n.)$ represents the the ratio

of the last term divided by the second last term.

NOTE: Be careful of division by zero on the first term!

For example, a $9$ row Fibonacci sequence would be:

$0$ ratio: $0\mathrm{.}000000$

$01$ ratio: $0\mathrm{.}000000$

$11$ ratio $1\mathrm{.}000000$

$01112$ ratio: $2\mathrm{.}000000$

$11123$ ratio: $1\mathrm{.}500000$

$0111235$ ratio: $1\mathrm{.}666667$

$0111212358$ ratio: $1\mathrm{.}600000$

$0111223581321$ ratio: $1\mathrm{.}615385$