एक डिफॉल्ट आर्ग्युमेंट वाला फंक्शन

# Define shout_echo
def ____(____, ____):
    """Concatenate echo copies of word1 and three
     exclamation marks at the end of the string."""

    # Concatenate echo copies of word1 using *: echo_word
    echo_word = ____

    # Concatenate '!!!' to echo_word: shout_word
    shout_word = echo_word + '!!!'

    # Return shout_word
    return shout_word

# Call shout_echo() with "Hey": no_echo
no_echo = ____

# Call shout_echo() with "Hey" and echo=5: with_echo
with_echo = ____

# Print no_echo and with_echo
print(no_echo)
print(with_echo)