Question

• Language: Python 3
• Compose a function process which accepts a string filename. process should return a list of records contained in the file.
• #define your function here
• # Create a blank list called `entries` and an empty string called `current_style`.
• # Open the file `filename`, read the data using readlines(), and close it.
• # Loop through each line of the file and do the following:
• # Strip the whitespace off of the ends of the line using the `strip` method.
• # If the line is blank, `continue` execution.
• # If a line starts with `#`, it contains the musical style to be assigned to the musicians below
  # until the next line with `#`.
  # In this case, remove the `'#'` from the beginning of the string and assign the musical style to `current_style`.
  # The loop should then `continue`.

• # Otherwise, a line contains a blues musician. In this case, process the record much as you did above,
  # except that you also need to add a musical style to the tuple as the third element.
  # These data should be appended to the list `entries` as a single entry in the form of a tuple,
  # (surname, first_name, current_style)

    
  # Finally, `return` the list `entries`.

• The input is from a txt file

• # it should pass this test
  # test basic single-genre case
  zydeco = process('./data/zydeco.txt')
  assert zydeco[0] == ('Chavis', 'Boozoo', 'Zydeco')
  assert zydeco[-3] == ('Dopsy', "Rockin'", 'Zydeco')

• file zydeco.txt:

• #Zydeco
  Boozoo Chavis
  C. C. Adcock
  Chris Ardoin
  Scott Billington
  Dudley Broussard
  Chubby Carrier
  Roy Carrier
  C. J. Chenier
  Chubby Carrier
  Geno Delafose
  Canray Fontenot
  Keith Frank
  Queen Ida
  Beau Jocque
  Leftover Salmon
  Rockin' Sidney
  Terrance Simien
  Andre Thierry
  Cedric Watson
  Buckwheat Zydeco
  Nathan Williams
  Guyland Leday
  Lil' Nate
  Leon Chavis
  Mo' Mojo
  Kenne' Wayne
  Rockin' Dopsy
  Amede Ardoin
  Clifton Chenier

Answer 1

RAW CODE

def process(filename):
                a = open(filename,"r")
                b = a.readlines() ### read line by line until \n character
                words = [x.strip() for x in b] ### remove \n character
                words = [x for x in words if x] ### In case list have null value, then remove
                data = []
                for word in words:
                        if word[0] == '#':
                                music_type = word[1:] ## If starts with # then keep it as music type
                        else:
                                *first, last =  word.split(" ") ### * indicates more than one value
                                tup = (last, " ".join(first), music_type) ## making them tuples
                                data.append(tup) ### appending tuple in list


                return data


zydeco = process('zydeco.txt')
assert zydeco[0] == ('Chavis', 'Boozoo', 'Zydeco')
assert zydeco[-3] == ('Dopsy', "Rockin'", 'Zydeco')
print(zydeco)

SCREENSHOTS (CODE WITH OUTPUT)

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