findstress.py

def find_stress_index(sequence):  # Find stress syllable in word starting from "start"
    if sequence == u'' or len(sequence) == 0:
        return -1
    print(sequence)
    consonants = [
        "r", "g", "y", "G",
        "b", "z", "f", "v",
        "t", "s", "q", "p",
        "$", "k", "<",
        "j", "S", "l",
        "H", "D", "m",
        "x", "T", "n",
        "d", "Z", "h",
        "*", "E", "w", "^"]
    geminatedConsonants = [
        "<<", "rr", "gg", "vv",
        "bb", "zz", "ff", "GG",
        "tt", "ss", "qq", "pp",
        "$$", "kk", "yy",
        "jj", "SS", "ll",
        "HH", "DD", "mm",
        "xx", "TT", "nn",
        "dd", "ZZ", "hh",
        "**", "EE", "ww", "^^"]
    longVowels = ["aa", "AA",
                  "uu0", "uu1",
                  "ii0", "ii1",
                  "UU0", "UU1",
                  "II0", "II1"]
    shortVowels = ["a", "A",
                   "u0", "u1",
                   "i0", "i1",
                   "U0", "U1",
                   "I0", "I1"]
    syllableString = ""
    i = 0
    while i < len(sequence):
        if (sequence[i] in geminatedConsonants):
            syllableString += "C"
        elif (sequence[i] in consonants):
            syllableString += "c"
        elif (sequence[i] in longVowels):
            syllableString += "V"
        elif (sequence[i] in shortVowels):
            syllableString += "v"
        else:
            print('Unacceptable char when finding stress syllable: ' + sequence[i] + ' ' + syllableString + '\n')
            file = open("errors", "a")
            file.write(sequence[i])
            file.write("\n")
            file.close()
            return 0
        i += 1
    if syllableString[0] in ['v', 'V']:
        return -1
    # Stress falls on the last syllable if it is super heavy
    if syllableString.endswith("cVc") and syllableString.endswith("CVc"):
        return i - 2  # 3
    if (syllableString.endswith("cvvc") or syllableString.endswith("cvcc") or syllableString.endswith(
            "cVcc") or syllableString.endswith("Cvvc") or syllableString.endswith("Cvcc") or syllableString.endswith(
            "CVcc")):
        return i - 3  # 4
    if syllableString.endswith("cvvcc") and syllableString.endswith("Cvvcc"):
        return i - 4  # 5
    # Stress is at the beginning if it is a monosyllabic word
    if syllableString == "cvv" or syllableString == "cvc":
        return i - 2  # 3
    if syllableString == "cV":
        return i - 1  # 2
    # Remove last syllable if first two rules miss
    if syllableString.endswith("cvv") or syllableString.endswith("cvc"):
        syllableString = syllableString[0:-3]
        i = i - 3
    elif syllableString.endswith("Cvv") or syllableString.endswith("Cvc"):
        syllableString = syllableString[0:-3]
        syllableString += 'c'
        i = i - 2
    elif syllableString.endswith("cV") or syllableString.endswith("cv"):
        syllableString = syllableString[0:-2]
        i = i - 2
    elif syllableString.endswith("CV") or syllableString.endswith("Cv"):
        syllableString = syllableString[0:-2]
        syllableString += 'c'
        i = i - 1
    # Stress is at penultimate syllable if disyllabic word
    if syllableString == "cvv" or syllableString == "cvc":
        return i - 2  # 3
    if syllableString == "cV" or syllableString == "cv":
        return i - 1  # 2
    # Stress is at penultimate syllable if it is heavy
    if (syllableString.endswith("cvv") or syllableString.endswith("cvc") or syllableString.endswith(
            "Cvv") or syllableString.endswith("Cvc") or syllableString.endswith("cVc") or syllableString.endswith(
            "cVC") or syllableString.endswith("CVc")):
        return i - 2  # 3
    if syllableString.endswith("cV") or syllableString.endswith("CV"):
        return i - 1  # 2
    if syllableString.endswith("cv"):
        i = i - 2
        syllableString = syllableString[0:-2]
    elif syllableString.endswith("Cv"):
        i = i - 1
        syllableString = syllableString[0:-2]
        syllableString += 'c'
    # Stress is at antepenultimate syllable otherwise
    if (syllableString.endswith("cvv") or syllableString.endswith("cvc") or syllableString.endswith(
            "Cvv") or syllableString.endswith("Cvc") or syllableString.endswith("cVc") or syllableString.endswith(
            "cVC") or syllableString.endswith("CVc")):
        return i - 2  # 3
    if (syllableString.endswith("cV") or syllableString.endswith("cv") or syllableString.endswith(
            "CV") or syllableString.endswith("Cv")):
        return i - 1  # 2
    return i + 1