1705
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Ran 02 Apr 2020 05:16AM UTC

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Build # 1705

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Commit Message

Merge #1041

1041: Return expected empty type for parse_pattern function r=hgrecco a=abmyii

N.B. Pardon me if I didn't follow convention by opening an issue before making this PR.

Whilst using the `parse_pattern` function with `pandas` I realised the `return self.Quantity(1)` returned a dimensionless quantity which would be out of place compared to all of the other returned values causing parsing issues. The error I was getting was:
```
  File "/usr/lib/python3.6/site-packages/pandas/core/frame.py", line 1598, in from_records
    arrays, arr_columns = to_arrays(data, columns, coerce_float=coerce_float)
  File "/usr/lib/python3.6/site-packages/pandas/core/internals/construction.py", line 464, in to_arrays
    return _list_to_arrays(data, columns, coerce_float=coerce_float, dtype=dtype)
  File "/usr/lib/python3.6/site-packages/pandas/core/internals/construction.py", line 496, in _list_to_arrays
    content = list(lib.to_object_array(data).T)
  File "pandas/_libs/lib.pyx", line 2275, in pandas._libs.lib.to_object_array
  File "/usr/lib/python3.6/site-packages/pint/quantity.py", line 1693, in __len__
    return len(self._magnitude)
TypeError: object of type 'int' has no len()
```

This simple fix returns a value which conforms with the expected output type.

Co-authored-by: Abdurrahmaan Iqbal <abdurrahmaaniqbal@hotmail.com>

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Jobs

ID	Job ID	Ran	Coverage
1	1705.1 (PKGS="python=3.7 flake8 black isort")	02 Apr 2020 05:16AM UTC		Travis Job 1705.1
2	1705.2 (PKGS="python=3.7 ipython matplotlib nbsphinx numpy sphinx Pygments==2.3.1 docutils==0.14 alabaster commonmark==0.8.1 recommonmark==0.5.0")	02 Apr 2020 05:18AM UTC		Travis Job 1705.2
3	1705.3 (PKGS="python=3.6")	02 Apr 2020 05:17AM UTC	75.47	Travis Job 1705.3
4	1705.4 (PKGS="python=3.7")	02 Apr 2020 05:18AM UTC	75.47	Travis Job 1705.4
5	1705.5 (PKGS="python=3.8")	02 Apr 2020 05:19AM UTC	75.84	Travis Job 1705.5
6	1705.6 (PKGS="python=3.6 uncertainties=3.0")	02 Apr 2020 05:19AM UTC	88.21	Travis Job 1705.6
7	1705.7 (PKGS="python=3.7 uncertainties=3.0")	02 Apr 2020 05:20AM UTC	88.29	Travis Job 1705.7
8	1705.8 (PKGS="python=3.6 numpy=1.14 matplotlib")	02 Apr 2020 05:21AM UTC	85.07	Travis Job 1705.8
9	1705.9 (PKGS="python=3.7 numpy=1.14 matplotlib")	02 Apr 2020 05:21AM UTC	84.99	Travis Job 1705.9
10	1705.10 (PKGS="python=3.8 numpy=1.17 matplotlib")	02 Apr 2020 05:21AM UTC	87.57	Travis Job 1705.10
11	1705.11 (PKGS="python=3.6 numpy=1.14 uncertainties=3.0")	02 Apr 2020 05:22AM UTC	86.1	Travis Job 1705.11
12	1705.12 (PKGS="python=3.7 numpy=1.14 uncertainties=3.0")	02 Apr 2020 05:22AM UTC	86.1	Travis Job 1705.12
13	1705.13 (PKGS="python=3.6 numpy uncertainties")	02 Apr 2020 05:23AM UTC	88.29	Travis Job 1705.13
14	1705.14 (PKGS="python=3.7 numpy uncertainties")	02 Apr 2020 05:23AM UTC	88.21	Travis Job 1705.14
15	1705.15 (PKGS="python=3.8 numpy uncertainties")	02 Apr 2020 05:23AM UTC	88.48	Travis Job 1705.15
16	1705.16 (PKGS="python=3.8 numpy uncertainties sparse xarray netCDF4")	02 Apr 2020 05:24AM UTC	88.58	Travis Job 1705.16

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