Does Julia have an "invisible" function?

New to Julia
6

This is my final solution, and it does work to hide the password, but anyone who knows Julia can simply remove the semicolon at the end, and it will appear, so not exactly what I wanted. I have to circulate this code to colleagues and others. The syntax for the ODBC connection is very specific with respect to “,” and “;” . Thx. J

con3 = ODBC.Connection(
    "Driver=ODBC Driver 17 for SQL Server;
    SERVER=66.66.66.66;
    DATABASE=dbname;
    UID=username;
    PWD=$(read(`secret-tool lookup word1 word2 word3 word4`,String))");