Error with skipfooter in enrich mode

[afrubin]

The program crashes with a ValueError when validating the skip_footer kwarg. The default argument is not an integer:

$ mavedb-convert enrich E4B_Dataset_S1.xlsx --wtseq ../E4B_wt.fa --score_column nscor_log2_ratio --dst .
[INFO] 2018-11-26 11:24:31,667 base Checking read permission for 'E4B_Dataset_S1.xlsx'
[INFO] 2018-11-26 11:24:31,667 base Checking write permission to directory '.'
[INFO] 2018-11-26 11:24:31,667 base Processing file E4B_Dataset_S1.xlsx
[ERROR] 2018-11-26 11:24:37,008 main An error occured during conversion.
Traceback (most recent call last):
  File "/Users/rubin.a/Code/mavedb-convert/mavedbconvert/main.py", line 194, in main
    enrich.Enrich(**kwargs).convert()
  File "/Users/rubin.a/Code/mavedb-convert/mavedbconvert/base.py", line 165, in convert
    mave_df = self.parse_input(self.load_input_file())
  File "/Users/rubin.a/Code/mavedb-convert/mavedbconvert/enrich.py", line 55, in load_input_file
    skipfooter=self.skip_footer_rows,
  File "/Users/rubin.a/.pyenv/versions/3.6.5/envs/mavedb-convert/lib/python3.6/site-packages/pandas/util/_decorators.py", line 178, in wrapper
    return func(*args, **kwargs)
  File "/Users/rubin.a/.pyenv/versions/3.6.5/envs/mavedb-convert/lib/python3.6/site-packages/pandas/util/_decorators.py", line 178, in wrapper
    return func(*args, **kwargs)
  File "/Users/rubin.a/.pyenv/versions/3.6.5/envs/mavedb-convert/lib/python3.6/site-packages/pandas/io/excel.py", line 329, in read_excel
    **kwds)
  File "/Users/rubin.a/.pyenv/versions/3.6.5/envs/mavedb-convert/lib/python3.6/site-packages/pandas/io/excel.py", line 456, in parse
    **kwds)
  File "/Users/rubin.a/.pyenv/versions/3.6.5/envs/mavedb-convert/lib/python3.6/site-packages/pandas/io/excel.py", line 685, in _parse_excel
    **kwds)
  File "/Users/rubin.a/.pyenv/versions/3.6.5/envs/mavedb-convert/lib/python3.6/site-packages/pandas/io/parsers.py", line 2008, in TextParser
    return TextFileReader(*args, **kwds)
  File "/Users/rubin.a/.pyenv/versions/3.6.5/envs/mavedb-convert/lib/python3.6/site-packages/pandas/io/parsers.py", line 787, in __init__
    self._make_engine(self.engine)
  File "/Users/rubin.a/.pyenv/versions/3.6.5/envs/mavedb-convert/lib/python3.6/site-packages/pandas/io/parsers.py", line 1024, in _make_engine
    self._engine = klass(self.f, **self.options)
  File "/Users/rubin.a/.pyenv/versions/3.6.5/envs/mavedb-convert/lib/python3.6/site-packages/pandas/io/parsers.py", line 2040, in __init__
    self.skipfooter = _validate_skipfooter_arg(kwds['skipfooter'])
  File "/Users/rubin.a/.pyenv/versions/3.6.5/envs/mavedb-convert/lib/python3.6/site-packages/pandas/io/parsers.py", line 1163, in _validate_skipfooter_arg
    raise ValueError("skipfooter must be an integer")
ValueError: skipfooter must be an integer

The same error is encountered when a value of 0 is provided:

$ mavedb-convert enrich E4B_Dataset_S1.xlsx --wtseq ../E4B_wt.fa --score_column nscor_log2_ratio --dst . --skip_footer 0
[INFO] 2018-11-26 11:28:40,489 base Checking read permission for 'E4B_Dataset_S1.xlsx'
[INFO] 2018-11-26 11:28:40,489 base Checking write permission to directory '.'
[INFO] 2018-11-26 11:28:40,490 base Processing file E4B_Dataset_S1.xlsx
[ERROR] 2018-11-26 11:28:44,932 main An error occured during conversion.
Traceback (most recent call last):
  File "/Users/rubin.a/Code/mavedb-convert/mavedbconvert/main.py", line 194, in main
    enrich.Enrich(**kwargs).convert()
  File "/Users/rubin.a/Code/mavedb-convert/mavedbconvert/base.py", line 165, in convert
    mave_df = self.parse_input(self.load_input_file())
  File "/Users/rubin.a/Code/mavedb-convert/mavedbconvert/enrich.py", line 55, in load_input_file
    skipfooter=self.skip_footer_rows,
  File "/Users/rubin.a/.pyenv/versions/3.6.5/envs/mavedb-convert/lib/python3.6/site-packages/pandas/util/_decorators.py", line 178, in wrapper
    return func(*args, **kwargs)
  File "/Users/rubin.a/.pyenv/versions/3.6.5/envs/mavedb-convert/lib/python3.6/site-packages/pandas/util/_decorators.py", line 178, in wrapper
    return func(*args, **kwargs)
  File "/Users/rubin.a/.pyenv/versions/3.6.5/envs/mavedb-convert/lib/python3.6/site-packages/pandas/io/excel.py", line 329, in read_excel
    **kwds)
  File "/Users/rubin.a/.pyenv/versions/3.6.5/envs/mavedb-convert/lib/python3.6/site-packages/pandas/io/excel.py", line 456, in parse
    **kwds)
  File "/Users/rubin.a/.pyenv/versions/3.6.5/envs/mavedb-convert/lib/python3.6/site-packages/pandas/io/excel.py", line 685, in _parse_excel
    **kwds)
  File "/Users/rubin.a/.pyenv/versions/3.6.5/envs/mavedb-convert/lib/python3.6/site-packages/pandas/io/parsers.py", line 2008, in TextParser
    return TextFileReader(*args, **kwds)
  File "/Users/rubin.a/.pyenv/versions/3.6.5/envs/mavedb-convert/lib/python3.6/site-packages/pandas/io/parsers.py", line 787, in __init__
    self._make_engine(self.engine)
  File "/Users/rubin.a/.pyenv/versions/3.6.5/envs/mavedb-convert/lib/python3.6/site-packages/pandas/io/parsers.py", line 1024, in _make_engine
    self._engine = klass(self.f, **self.options)
  File "/Users/rubin.a/.pyenv/versions/3.6.5/envs/mavedb-convert/lib/python3.6/site-packages/pandas/io/parsers.py", line 2040, in __init__
    self.skipfooter = _validate_skipfooter_arg(kwds['skipfooter'])
  File "/Users/rubin.a/.pyenv/versions/3.6.5/envs/mavedb-convert/lib/python3.6/site-packages/pandas/io/parsers.py", line 1163, in _validate_skipfooter_arg
    raise ValueError("skipfooter must be an integer")
ValueError: skipfooter must be an integer

Adding to the confusion, the kwarg name is skip_footer but the key returning the error is skipfooter. These should be harmonized.