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Python Technical Interview Prep: Python Basics Basic Python Let's Get Together

Mohammed Saleh
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Mohammed Saleh
Python Development Techdegree Student 2,989 Points

Let's Get Together task.

Use the function called morse_code. It will take 1 parameter, a word. For example: 'apple'.

Using the given morse coe

join.py
def morse_code(word):
    morse_dict = {
        'a': 'dot-dash',
        'b': 'dash-dot-dot-dot',
        'c': 'dash-dot-dash-dot',
        'd': 'dash-dot-dot',
        'e': 'dot',
        'f': 'dot-dot-dash-dot',
        'g': 'dash-dash-dot',
        'h': 'dot-dot-dot-dot',
        'i': 'dot-dot',
        'j': 'dot-dash-dash-dash',
        'k': 'dash-dot-dash',
        'l': 'dot-dash-dot-dot',
        'm': 'dash-dash',
        'n': 'dash-dot',
        'o': 'dash-dash-dash',
        'p': 'dot-dash-dash-dot',
        'q': 'dash-dash-dot-dash',
        'r': 'dot-dash-dot',
        's': 'dot-dot-dot',
        't': 'dash',
        'u': 'dot-dot-dash',
        'v': 'dot-dot-dot-dash', 
        'w': 'dot-dash-dash',
        'y': 'dash-dot-dash-dash',
        'z': 'dash-dash-dot-dot'
    }
    return ['a']['p']['p']['l']['e']

morse_code(apple)

can someone tell me in another simple words what are we suppose to do here, because i didn't get the question from the first place ? thanks

2 Answers

If the input word is a, the challenge wants you to return the morse code representation of a, which is given to you in morse_dict as 'dot-dash'.

If the input word is ab, the challenge wants you to return a string with the morse code representation of a, followed by a -, followed by the morse code representation of b, which is given to you as 'dash-dot-dot-dot', so the string to return would be 'dot-dash-dash-dot-dot-dot'.

If the input word is abc, the challenge wants you to return the morse code representation of a, followed by a -, followed by the morse code representation of b, followed by a -, followed by the morse code representation of c, which is given to you as 'dash-dot-dash-dot', so the string to return would be 'dot-dash-dash-dot-dot-dot-dash-dot-dash-dot'.

Mohammed Saleh
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.a{fill-rule:evenodd;}techdegree
Mohammed Saleh
Python Development Techdegree Student 2,989 Points

thank you so much for you great explanation

i put this code :

for character in morse_dict: character += morse_dict['n'] + "-" character += morse_dict['b']

    return character

but always gets :

Bummer: Uh oh, I didn't get the correct value returned. It should have been dash-dot-dash-dot-dot-dot for the word 'tree'. Instead, it was adash-dot-dash-dot-dot-dot.

from where the "a " before the first dash comes from.

The first "a" comes from the key 'a' in the dictionary morse_dict.

Assuming that the line for character in morse_dict: is your only line not indented, you currently have

for character in morse_dict: # loops through each key of the dictionary, starting with character = 'a' since dictionaries are ordered
    character += morse_dict['n'] + "-" # character = 'adash-dot-'
    character += morse_dict['b'] # character = 'adash-dot-dash-dot-dot-dot'
    return character # returns 'adash-dot-dash-dot-dot-dot' and prevents the for loop from looping again

Your code does not currently use the function's input word, so it will return the same string each time.