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DOC: update pandas/core/ops.py docstring template to accept examples #20246

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Mar 11, 2018
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DOC: update pandas/core/ops.py docstring template to accept examples #20246

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7795e6c
add hook to include dataframe examples
alysivji Mar 10, 2018
4e3f1ce
change name
jorisvandenbossche Mar 11, 2018
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117 changes: 71 additions & 46 deletions pandas/core/ops.py
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Original file line number Diff line number Diff line change
Expand Up @@ -343,50 +343,93 @@ def _get_op_name(op, special):
# -----------------------------------------------------------------------------
# Docstring Generation and Templates

_add_example_FRAME = """
>>> a = pd.DataFrame([1, 1, 1, np.nan], index=['a', 'b', 'c', 'd'],
columns=['one'])
>>> a
one
a 1.0
b 1.0
c 1.0
d NaN
>>> b = pd.DataFrame(dict(one=[1, np.nan, 1, np.nan],
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blank line between ases

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@jreback I am about to put in a PR for one of the examples. Where should there be a blank line? Between what would be "cell" executions?

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@kurtiskerstein I think there should be only blank lines around "blocks" of code that you want to have appear together in one code block

two=[np.nan, 2, np.nan, 2]),
index=['a', 'b', 'd', 'e'])
>>> b
one two
a 1.0 NaN
b NaN 2.0
d 1.0 NaN
e NaN 2.0
>>> a.add(b, fill_value=0)
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could add some text here to indicate what the filling is doing

one two
a 2.0 NaN
b 1.0 2.0
c 1.0 NaN
d 1.0 NaN
e NaN 2.0
"""

_op_descriptions = {
# Arithmetic Operators
'add': {'op': '+',
'desc': 'Addition',
'reverse': 'radd'},
'reverse': 'radd',
'df_examples': _add_example_FRAME},
'sub': {'op': '-',
'desc': 'Subtraction',
'reverse': 'rsub'},
'reverse': 'rsub',
'df_examples': None},
'mul': {'op': '*',
'desc': 'Multiplication',
'reverse': 'rmul'},
'reverse': 'rmul',
'df_examples': None},
'mod': {'op': '%',
'desc': 'Modulo',
'reverse': 'rmod'},
'reverse': 'rmod',
'df_examples': None},
'pow': {'op': '**',
'desc': 'Exponential power',
'reverse': 'rpow'},
'reverse': 'rpow',
'df_examples': None},
'truediv': {'op': '/',
'desc': 'Floating division',
'reverse': 'rtruediv'},
'reverse': 'rtruediv',
'df_examples': None},
'floordiv': {'op': '//',
'desc': 'Integer division',
'reverse': 'rfloordiv'},
'reverse': 'rfloordiv',
'df_examples': None},
'divmod': {'op': 'divmod',
'desc': 'Integer division and modulo',
'reverse': None},
'reverse': None,
'df_examples': None},

# Comparison Operators
'eq': {'op': '==',
'desc': 'Equal to',
'reverse': None},
'desc': 'Equal to',
'reverse': None,
'df_examples': None},
'ne': {'op': '!=',
'desc': 'Not equal to',
'reverse': None},
'desc': 'Not equal to',
'reverse': None,
'df_examples': None},
'lt': {'op': '<',
'desc': 'Less than',
'reverse': None},
'desc': 'Less than',
'reverse': None,
'df_examples': None},
'le': {'op': '<=',
'desc': 'Less than or equal to',
'reverse': None},
'desc': 'Less than or equal to',
'reverse': None,
'df_examples': None},
'gt': {'op': '>',
'desc': 'Greater than',
'reverse': None},
'desc': 'Greater than',
'reverse': None,
'df_examples': None},
'ge': {'op': '>=',
'desc': 'Greater than or equal to',
'reverse': None}}
'desc': 'Greater than or equal to',
'reverse': None,
'df_examples': None}}

_op_names = list(_op_descriptions.keys())
for key in _op_names:
Expand Down Expand Up @@ -532,30 +575,7 @@ def _get_op_name(op, special):

Examples
--------
>>> a = pd.DataFrame([1, 1, 1, np.nan], index=['a', 'b', 'c', 'd'],
columns=['one'])
>>> a
one
a 1.0
b 1.0
c 1.0
d NaN
>>> b = pd.DataFrame(dict(one=[1, np.nan, 1, np.nan],
two=[np.nan, 2, np.nan, 2]),
index=['a', 'b', 'd', 'e'])
>>> b
one two
a 1.0 NaN
b NaN 2.0
d 1.0 NaN
e NaN 2.0
>>> a.add(b, fill_value=0)
one two
a 2.0 NaN
b 1.0 2.0
c 1.0 NaN
d 1.0 NaN
e NaN 2.0
{df_examples}

See also
--------
Expand Down Expand Up @@ -622,14 +642,19 @@ def _make_flex_doc(op_name, typ):

if typ == 'series':
base_doc = _flex_doc_SERIES
doc = base_doc.format(desc=op_desc['desc'], op_name=op_name,
equiv=equiv, reverse=op_desc['reverse'])
elif typ == 'dataframe':
base_doc = _flex_doc_FRAME
doc = base_doc.format(desc=op_desc['desc'], op_name=op_name,
equiv=equiv, reverse=op_desc['reverse'],
df_examples=op_desc['df_examples'])
elif typ == 'panel':
base_doc = _flex_doc_PANEL
doc = base_doc.format(desc=op_desc['desc'], op_name=op_name,
equiv=equiv, reverse=op_desc['reverse'])
else:
raise AssertionError('Invalid typ argument.')
doc = base_doc.format(desc=op_desc['desc'], op_name=op_name,
equiv=equiv, reverse=op_desc['reverse'])
return doc


Expand Down