#'Soundex in Python

SoundEx = {"A":"0", "E":"0", "I":"0", "O":"0", "U":"0", "W":"0", "H":"0", "B":1, "P":1, "F":1, "V":1, "C":2, "S":2, "K":2, "G":2, "J":2, "Q":2, "X":2, "Z":2, "D":3, "T":3, "L":4, "M":5, "N":5, "R":6} 
def charLet(letter):
letter = letter.upper()
charLet = [letter[0]]

for i in range(1, len(letter)):

if SoundEx[letter[i]] != "0":

if letter[i] != letter[i-1] and SoundEx[letter[i]] != SoundEx[letter[i-1]]:
charLet.append(str(SoundEx[letter[i]]))

else:
continue

else:
continue

if len(charLet) <= 4:
charLet += ["0"] * (4 - len(charLet))

else:
charLet = charLet[0:4]

return "".join(charLet)