# Define shout$\_$echo

def shout$\_$echo$($word$1,$ echo$=1)$:

$"""$Concatenate echo copies of word$1$ and three

exclamation marks at the end of the string."""

# Initialize empty strings: echo$\_$word, shout$\_$words

# Add exception handling with try$-$except

$\_\_\_\_$:

# Concatenate echo copies of word$1$ using $*$: echo$\_$word

echo$\_$word $=\_\_\_\_$

# Concatenate $\text{'}!!!\text{'}$ to echo$\_$word: shout$\_$words

shout$\_$words $=\_\_\_\_$

$\_\_\_\_$:

# Print error message

print$("$word$1$ must be a string and echo must be an integer."$)$

# Return shout$\_$words

return shout$\_$words

# Call shout$\_$echo

shout$\_$echo$("$particle$",$ echo$=$"accelerator"$)$