"fullname: strange docString, no actual regex code?

MPORTANT: you should complete the PDP thinking process for each program. Turn in items:

$1)$ fullname$\_$regex.py $$ Ask the user to enter the source text to search, such as the name$\_$source variable here:

name$\_$source $=$ input$(\text{'}$Enter full name in this format $$ fir XS$02$ st middle last'$).$

Then, you can adapt the first two code lines from lesson slide $13,$ to search this new source. Edit the code to match

the new situation and change the regex pattern to identify text that could be a full name.

Hints: Initially write your regex pattern to check if the user enters three words separated by a space. Then, strive to

make the regex adaptable if the person's full name has more than or less than $3$ words. Then, think about allowing

$($not requiring$)$ common characters like a period, hyphen or $\text{'}.$ Slides $11-13$ should be helpful.

For printing, end with a conditional block that provides an appropriate message if there is a match or no

$""""""$ create a regex to ask the user to enter va

resource text $""""""$

# function to display menu

def display$\_$menu$()$:

print$(\text{'}$COMMAND MENU'$)$

print$(\text{'}$view$-$ View user names'$)$

print$(\text{'}$add$-$ Add a user'$)$

print$(\text{'}$edit$-$ Edit a user'$)$

print$(\text{'}$del$-$ Delete a user'$)$

print$(\text{'}$exit$-$ Exit program'$)$

# to display all usernames

def display$\_$username$($users$)$:

user$\_$username $=$ list$($users$.$keys$())$

user$\_$username.sort$()$

line $=$ 'usernames:$\text{'}$

for user$\_$username in user$\_$username:

line $+=$ user$\_$username $+\text{'}\text{'}$

print$($line$)$

# to view fullname of entered username

def view$($users$)$:

display$\_$username$($users$)$

user$\_$username $=$ input$(\text{'}$Enter username to view $\text{'})$

user$\_$username $=$ user$\_$username.lower$()$

# if entered username present in dictionary

if user$\_$username in users:

user$\_$fullname $=$ users$[$user$\_$username$]$

print$(\text{'}$fullname:$\text{'}+$ user$\_$fullname $+\text{'}.$

$\text{'})$

# if not present

else:

print$(\text{'}$there is no user with this user name.

$\text{'})"$