Solutions for the dictionary practice problems.

First to remove the lines with duplicate codes.

# create an empty dictionary to hold the codes we've seen
codes = {}

# create an output file
ofile = file('outlines.txt', 'w')

# read and process each line from the input
for line in file('lines.txt'):
    # get the code
    code = line[:10]  # get the code
    if code not in codes:  # have we seen it before?
        # no, write this line and remember the code
        ofile.write(line)
        codes[code] = True

# close the output file
ofile.close()

Then to translate text messages.

# initialize our dictionary of acronyms
tla = {
    'abt': 'about',
    'adn': 'any day now',
    'irl': 'in real life',
    'lol': 'laugh out loud',
    'b4': 'before'
}

def translate(text):
    result = []
    for word in text.split():
        if word in tla:
            result.append(tla[word])
        else:
            result.append(word)
    return ' '.join(result)

print translate('I am abt to lol irl')