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h-vetinarih-vetinari
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Fixturize tests/frame/test_arithmetic
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-123
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2 files changed

+90
-123
lines changed

‎pandas/tests/frame/conftest.py‎

Lines changed: 10 additions & 8 deletions
Original file line numberDiff line numberDiff line change
@@ -70,9 +70,10 @@ def mixed_float_frame():
7070
Columns are ['A', 'B', 'C', 'D'].
7171
"""
7272
df = DataFrame(tm.getSeriesData())
73-
df.A = df.A.astype('float16')
73+
df.A = df.A.astype('float32')
7474
df.B = df.B.astype('float32')
75-
df.C = df.C.astype('float64')
75+
df.C = df.C.astype('float16')
76+
df.D = df.D.astype('float64')
7677
return df
7778

7879

@@ -84,9 +85,10 @@ def mixed_float_frame2():
8485
Columns are ['A', 'B', 'C', 'D'].
8586
"""
8687
df = DataFrame(tm.getSeriesData())
87-
df.D = df.D.astype('float16')
88+
df.D = df.D.astype('float32')
8889
df.C = df.C.astype('float32')
89-
df.B = df.B.astype('float64')
90+
df.B = df.B.astype('float16')
91+
df.D = df.D.astype('float64')
9092
return df
9193

9294

@@ -99,10 +101,10 @@ def mixed_int_frame():
99101
"""
100102
df = DataFrame({k: v.astype(int)
101103
for k, v in compat.iteritems(tm.getSeriesData())})
102-
df.A = df.A.astype('uint8')
103-
df.B = df.B.astype('int32')
104-
df.C = df.C.astype('int64')
105-
df.D = np.ones(len(df.D), dtype='uint64')
104+
df.A = df.A.astype('int32')
105+
df.B = np.ones(len(df.B), dtype='uint64')
106+
df.C = df.C.astype('uint8')
107+
df.D = df.C.astype('int64')
106108
return df
107109

108110

‎pandas/tests/frame/test_arithmetic.py‎

Lines changed: 80 additions & 115 deletions
Original file line numberDiff line numberDiff line change
@@ -127,132 +127,97 @@ def test_df_add_flex_filled_mixed_dtypes(self):
127127
'B': ser * 2})
128128
tm.assert_frame_equal(result, expected)
129129

130-
def test_arith_flex_frame(self):
131-
seriesd = tm.getSeriesData()
132-
frame = pd.DataFrame(seriesd).copy()
133-
134-
mixed_float = pd.DataFrame({'A': frame['A'].copy().astype('float32'),
135-
'B': frame['B'].copy().astype('float32'),
136-
'C': frame['C'].copy().astype('float16'),
137-
'D': frame['D'].copy().astype('float64')})
138-
139-
intframe = pd.DataFrame({k: v.astype(int)
140-
for k, v in seriesd.items()})
141-
mixed_int = pd.DataFrame({'A': intframe['A'].copy().astype('int32'),
142-
'B': np.ones(len(intframe), dtype='uint64'),
143-
'C': intframe['C'].copy().astype('uint8'),
144-
'D': intframe['D'].copy().astype('int64')})
145-
146-
# force these all to int64 to avoid platform testing issues
147-
intframe = pd.DataFrame({c: s for c, s in intframe.items()},
148-
dtype=np.int64)
149-
150-
ops = ['add', 'sub', 'mul', 'div', 'truediv', 'pow', 'floordiv', 'mod']
130+
@pytest.mark.parametrize('op', ['add', 'sub', 'mul', 'div', 'truediv',
131+
'pow', 'floordiv', 'mod'])
132+
def test_arith_flex_frame(self, op, int_frame, mixed_int_frame,
133+
float_frame, mixed_float_frame):
134+
151135
if not PY3:
152136
aliases = {}
153137
else:
154138
aliases = {'div': 'truediv'}
155-
156-
for op in ops:
157-
try:
158-
alias = aliases.get(op, op)
159-
f = getattr(operator, alias)
160-
result = getattr(frame, op)(2 * frame)
161-
exp = f(frame, 2 * frame)
139+
alias = aliases.get(op, op)
140+
141+
f = getattr(operator, alias)
142+
result = getattr(float_frame, op)(2 * float_frame)
143+
exp = f(float_frame, 2 * float_frame)
144+
tm.assert_frame_equal(result, exp)
145+
146+
# vs mix float
147+
result = getattr(mixed_float_frame, op)(2 * mixed_float_frame)
148+
exp = f(mixed_float_frame, 2 * mixed_float_frame)
149+
tm.assert_frame_equal(result, exp)
150+
_check_mixed_float(result, dtype=dict(C=None))
151+
152+
# vs mix int
153+
if op in ['add', 'sub', 'mul']:
154+
result = getattr(mixed_int_frame, op)(2 + mixed_int_frame)
155+
exp = f(mixed_int_frame, 2 + mixed_int_frame)
156+
157+
# no overflow in the uint
158+
dtype = None
159+
if op in ['sub']:
160+
dtype = dict(B='uint64', C=None)
161+
elif op in ['add', 'mul']:
162+
dtype = dict(C=None)
163+
tm.assert_frame_equal(result, exp)
164+
_check_mixed_int(result, dtype=dtype)
165+
166+
# rops
167+
r_f = lambda x, y: f(y, x)
168+
result = getattr(float_frame, 'r' + op)(2 * float_frame)
169+
exp = r_f(float_frame, 2 * float_frame)
170+
tm.assert_frame_equal(result, exp)
171+
172+
# vs mix float
173+
result = getattr(mixed_float_frame, op)(2 * mixed_float_frame)
174+
exp = f(mixed_float_frame, 2 * mixed_float_frame)
175+
tm.assert_frame_equal(result, exp)
176+
_check_mixed_float(result, dtype=dict(C=None))
177+
178+
result = getattr(int_frame, op)(2 * int_frame)
179+
exp = f(int_frame, 2 * int_frame)
180+
tm.assert_frame_equal(result, exp)
181+
182+
# vs mix int
183+
if op in ['add', 'sub', 'mul']:
184+
result = getattr(mixed_int_frame, op)(2 + mixed_int_frame)
185+
exp = f(mixed_int_frame, 2 + mixed_int_frame)
186+
187+
# no overflow in the uint
188+
dtype = None
189+
if op in ['sub']:
190+
dtype = dict(B='uint64', C=None)
191+
elif op in ['add', 'mul']:
192+
dtype = dict(C=None)
162193
tm.assert_frame_equal(result, exp)
194+
_check_mixed_int(result, dtype=dtype)
163195

164-
# vs mix float
165-
result = getattr(mixed_float, op)(2 * mixed_float)
166-
exp = f(mixed_float, 2 * mixed_float)
167-
tm.assert_frame_equal(result, exp)
168-
_check_mixed_float(result, dtype=dict(C=None))
169-
170-
# vs mix int
171-
if op in ['add', 'sub', 'mul']:
172-
result = getattr(mixed_int, op)(2 + mixed_int)
173-
exp = f(mixed_int, 2 + mixed_int)
174-
175-
# no overflow in the uint
176-
dtype = None
177-
if op in ['sub']:
178-
dtype = dict(B='uint64', C=None)
179-
elif op in ['add', 'mul']:
180-
dtype = dict(C=None)
181-
tm.assert_frame_equal(result, exp)
182-
_check_mixed_int(result, dtype=dtype)
183-
184-
# rops
185-
r_f = lambda x, y: f(y, x)
186-
result = getattr(frame, 'r' + op)(2 * frame)
187-
exp = r_f(frame, 2 * frame)
188-
tm.assert_frame_equal(result, exp)
189-
190-
# vs mix float
191-
result = getattr(mixed_float, op)(2 * mixed_float)
192-
exp = f(mixed_float, 2 * mixed_float)
193-
tm.assert_frame_equal(result, exp)
194-
_check_mixed_float(result, dtype=dict(C=None))
195-
196-
result = getattr(intframe, op)(2 * intframe)
197-
exp = f(intframe, 2 * intframe)
198-
tm.assert_frame_equal(result, exp)
199-
200-
# vs mix int
201-
if op in ['add', 'sub', 'mul']:
202-
result = getattr(mixed_int, op)(2 + mixed_int)
203-
exp = f(mixed_int, 2 + mixed_int)
204-
205-
# no overflow in the uint
206-
dtype = None
207-
if op in ['sub']:
208-
dtype = dict(B='uint64', C=None)
209-
elif op in ['add', 'mul']:
210-
dtype = dict(C=None)
211-
tm.assert_frame_equal(result, exp)
212-
_check_mixed_int(result, dtype=dtype)
213-
except:
214-
printing.pprint_thing("Failing operation %r" % op)
215-
raise
216-
217-
# ndim >= 3
218-
ndim_5 = np.ones(frame.shape + (3, 4, 5))
219-
msg = "Unable to coerce to Series/DataFrame"
220-
with tm.assert_raises_regex(ValueError, msg):
221-
f(frame, ndim_5)
222-
223-
with tm.assert_raises_regex(ValueError, msg):
224-
getattr(frame, op)(ndim_5)
225-
226-
# res_add = frame.add(frame)
227-
# res_sub = frame.sub(frame)
228-
# res_mul = frame.mul(frame)
229-
# res_div = frame.div(2 * frame)
230-
231-
# tm.assert_frame_equal(res_add, frame + frame)
232-
# tm.assert_frame_equal(res_sub, frame - frame)
233-
# tm.assert_frame_equal(res_mul, frame * frame)
234-
# tm.assert_frame_equal(res_div, frame / (2 * frame))
235-
236-
const_add = frame.add(1)
237-
tm.assert_frame_equal(const_add, frame + 1)
196+
# ndim >= 3
197+
ndim_5 = np.ones(float_frame.shape + (3, 4, 5))
198+
msg = "Unable to coerce to Series/DataFrame"
199+
with tm.assert_raises_regex(ValueError, msg):
200+
f(float_frame, ndim_5)
201+
202+
with tm.assert_raises_regex(ValueError, msg):
203+
getattr(float_frame, op)(ndim_5)
204+
205+
const_add = float_frame.add(1)
206+
tm.assert_frame_equal(const_add, float_frame + 1)
238207

239208
# corner cases
240-
result = frame.add(frame[:0])
241-
tm.assert_frame_equal(result, frame * np.nan)
209+
result = float_frame.add(float_frame[:0])
210+
tm.assert_frame_equal(result, float_frame * np.nan)
242211

243-
result = frame[:0].add(frame)
244-
tm.assert_frame_equal(result, frame * np.nan)
212+
result = float_frame[:0].add(float_frame)
213+
tm.assert_frame_equal(result, float_frame * np.nan)
245214
with tm.assert_raises_regex(NotImplementedError, 'fill_value'):
246-
frame.add(frame.iloc[0], fill_value=3)
215+
float_frame.add(float_frame.iloc[0], fill_value=3)
247216
with tm.assert_raises_regex(NotImplementedError, 'fill_value'):
248-
frame.add(frame.iloc[0], axis='index', fill_value=3)
249-
250-
def test_arith_flex_series(self):
251-
arr = np.array([[1., 2., 3.],
252-
[4., 5., 6.],
253-
[7., 8., 9.]])
254-
df = pd.DataFrame(arr, columns=['one', 'two', 'three'],
255-
index=['a', 'b', 'c'])
217+
float_frame.add(float_frame.iloc[0], axis='index', fill_value=3)
218+
219+
def test_arith_flex_series(self, simple_frame):
220+
df = simple_frame
256221

257222
row = df.xs('a')
258223
col = df['two']

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