$```$

from LabPrinter import LabPrinter

def call$\_$method$\_$named$($printer$,$ method$\_$name$)$:

if method$\_$name $==$ "print$\_2\_$plus$\_2"$:

printer.print$\_2\_$plus$\_2()$

elif method$\_$name $==$ "print$\_$secret":

printer.print$\_$secret$()$

else:

raise ValueError$($f$"$Unknown method: $\{$method$\_$name$\}")$

# Create two LabPrinter objects.

printer$1=$ LabPrinter$("$abc$")$

printer$2=$ LabPrinter$("$def$")$

# Step $1$:

# Uncomment the three lines below and submit code for grading. Note that

# the submission passes the "Compare output" test, but fails each unit test.

#print$("2+2=4")$

#print$("$Unknown method: print$\_$plus$\_2")$

#print$("$Secret string: $\backslash "$abc$\backslash "")$

# After completing step $1$:

# Remove lines of code from step $1$ and implement the call$\_$method$\_$named$()$

# function above the main part of the program.

call$\_$method$\_$named$($printer$,$ "print$\_2\_$plus$\_2")$

call$\_$method$\_$named$($printer$,$ "print$\_$plus$\_2")$

call$\_$method$\_$named$($printer$,$ "print$\_$secret"$)|$

$```$