Exercise $6\mathrm{.}2\mathrm{.}3$ Password Maker

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Write a program that generates a password with unique characters $($no repeated character$)$ from list of words.

The program will return the generated password as string. Password must have the following criteria:

$-$ Length is greater than or equal to $6.$

$-$ No repeated characters

$-$ no special characters allowed

$-$ all characters are lower case letters or numbers

Your function must return a string that satisfies the above criteria.

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# Complete the following function.

def password$\_$maker$($a$\_$list$)$:

return