Doctests of PseudoAAC.py are broken

[MartinThoma]

How to reproduce

pytest --doctest-modules propy/PseudoAAC.py

Errors

______________________________________________________________________________________________________ [doctest] propy.PseudoAAC.GetCorrelationFunction ______________________________________________________________________________________________________
472     AAP : List[Any]
473         contains the properties, each of which is a dict form.
474 
475     Returns
476     -------
477     result is the correlation value between two amino acids.
478 
479     Examples
480     --------
481     >>> GetCorrelationFunction(Ri="S", Rj="D", AAP=_Hydrophobicity)
UNEXPECTED EXCEPTION: KeyError(0)
Traceback (most recent call last):

  File "/home/moose/.pyenv/versions/3.8.1/lib/python3.8/doctest.py", line 1329, in __run
    exec(compile(example.source, filename, "single",

  File "<doctest propy.PseudoAAC.GetCorrelationFunction[0]>", line 1, in <module>

  File "/home/moose/GitHub/propy3/propy/PseudoAAC.py", line 488, in GetCorrelationFunction
    temp = NormalizeEachAAP(AAP[i])

KeyError: 0

/home/moose/GitHub/propy3/propy/PseudoAAC.py:481: UnexpectedException
___________________________________________________________________________________________________________ [doctest] propy.PseudoAAC.GetPseudoAAC ___________________________________________________________________________________________________________
597 
598     Returns
599     -------
600     result is a dict form containing calculated 20+lamda PAAC descriptors.
601 
602     Examples
603     --------
604     >>> from propy.GetProteinFromUniprot import GetProteinSequence
605     >>> protein = GetProteinSequence(ProteinID="Q9NQ39")
606     >>> result = GetPseudoAAC(protein)
UNEXPECTED EXCEPTION: ZeroDivisionError('float division by zero')
Traceback (most recent call last):

  File "/home/moose/.pyenv/versions/3.8.1/lib/python3.8/doctest.py", line 1329, in __run
    exec(compile(example.source, filename, "single",

  File "<doctest propy.PseudoAAC.GetPseudoAAC[2]>", line 1, in <module>

  File "/home/moose/GitHub/propy3/propy/PseudoAAC.py", line 611, in GetPseudoAAC
    res.update(GetPseudoAAC1(ProteinSequence, lamda, weight, AAP))

  File "/home/moose/GitHub/propy3/propy/PseudoAAC.py", line 539, in GetPseudoAAC1
    rightpart = rightpart + GetSequenceOrderCorrelationFactor(

  File "/home/moose/GitHub/propy3/propy/PseudoAAC.py", line 525, in GetSequenceOrderCorrelationFactor
    res.append(GetCorrelationFunction(AA1, AA2, AAP))

  File "/home/moose/GitHub/propy3/propy/PseudoAAC.py", line 490, in GetCorrelationFunction
    result = round(theta / NumAAP, 3)

ZeroDivisionError: float division by zero

/home/moose/GitHub/propy3/propy/PseudoAAC.py:606: UnexpectedException
________________________________________________________________________________________________ [doctest] propy.PseudoAAC.GetSequenceOrderCorrelationFactor _________________________________________________________________________________________________
507 
508     Returns
509     -------
510     result is the correlation factor value with the gap equal to k.
511 
512     Examples
513     --------
514     >>> from propy.GetProteinFromUniprot import GetProteinSequence
515     >>> protein = GetProteinSequence(ProteinID="Q9NQ39")
516     >>> result = GetSequenceOrderCorrelationFactor(protein)
UNEXPECTED EXCEPTION: ZeroDivisionError('float division by zero')
Traceback (most recent call last):

  File "/home/moose/.pyenv/versions/3.8.1/lib/python3.8/doctest.py", line 1329, in __run
    exec(compile(example.source, filename, "single",

  File "<doctest propy.PseudoAAC.GetSequenceOrderCorrelationFactor[2]>", line 1, in <module>

  File "/home/moose/GitHub/propy3/propy/PseudoAAC.py", line 525, in GetSequenceOrderCorrelationFactor
    res.append(GetCorrelationFunction(AA1, AA2, AAP))

  File "/home/moose/GitHub/propy3/propy/PseudoAAC.py", line 490, in GetCorrelationFunction
    result = round(theta / NumAAP, 3)

ZeroDivisionError: float division by zero

/home/moose/GitHub/propy3/propy/PseudoAAC.py:516: UnexpectedException