text: ##def reverse(x):
  ##    if len(x) % 2 == 0:
  ##        y = int(len(x)/2)
  ##    else:
  ##        y = int((len(x) - 1)/2)
  ##    letters = []
  ##    for j in range(len(x)):
  ##        letters.append(x[j])
  ##    for i in range(y):
  ##        letters[i], letters[-1-i] = letters[-1-i], letters[i]
  ##    return ''.join(letters)
  ##
  ##def anti_vowel(x):
  ##    letters = []
  ##    for i in range(len(x)):
  ##        if x[i] != 'a' and x[i] != 'e' and x[i] != 'i' and x[i] != 'o' and x[i] != 'u' and x[i] != 'A' and x[i] != 'E' and x[i] != 'I' and x[i] != 'O' and x[i] != 'U':
  ##            letters.append(x[i])
  ##    return ''.join(letters)
  ##
  ##score = {"a": 1, "c": 3, "b": 3, "e": 1, "d": 2, "g": 2, 
  ##         "f": 4, "i": 1, "h": 4, "k": 5, "j": 8, "m": 3, 
  ##         "l": 1, "o": 1, "n": 1, "q": 10, "p": 3, "s": 1, 
  ##         "r": 1, "u": 1, "t": 1, "w": 4, "v": 4, "y": 4, 
  ##         "x": 8, "z": 10}
  ##def scrabble_score(x):
  ##    x = x.lower()
  ##    points =[]
  ##    for i in range(len(x)):
  ##        points.append(int(score[x[i]]))
  ##    return sum(points)
  ##
  ##def censor(x, y):
  ##    z = len(y)*'*'
  ##    return x.replace(y, z)
  ##
  ##def count(s, i):
  ##    x=0
  ##    for m in range(len(s)):
  ##        if s[m] == i:
  ##            x += 1
  ##    return x
  ##
  ##def purify(x):
  ##    evens = []
  ##    for i in range(len(x)):
  ##        if x[i] % 2 == 0:
  ##            evens.append(x[i])
  ##    return evens
  ##
  ##def product(x):
  ##    y = 1
  ##    for i in range(len(x)):
  ##        y *= x[i]
  ##    return int(y)
  ##
  ##def remove_duplicates(x):
  ##    singles = []
  ##    for i in range(len(x)):
  ##        if x[i] not in singles:
  ##            singles.append(x[i])
  ##    return singles
  ##
  ##def median(x):
  ##    if len(x) % 2 != 0:
  ##        x.sort()
  ##        y = int((len(x)-1)/2)
  ##        return x[y]
  ##    else:
  ##        x.sort()
  ##        y = int((len(x)/2)-1)
  ##        z = int((len(x)/2))
  ##        return (x[y] + x[z])/2
  ##
  