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categoricals.py
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import warnings
import numpy as np
import pandas as pd
import pandas.util.testing as tm
try:
from pandas.api.types import union_categoricals
except ImportError:
try:
from pandas.types.concat import union_categoricals
except ImportError:
pass
class Concat(object):
def setup(self):
N = 10**5
self.s = pd.Series(list('aabbcd') * N).astype('category')
self.a = pd.Categorical(list('aabbcd') * N)
self.b = pd.Categorical(list('bbcdjk') * N)
def time_concat(self):
pd.concat([self.s, self.s])
def time_union(self):
union_categoricals([self.a, self.b])
class Constructor(object):
def setup(self):
N = 10**5
self.categories = list('abcde')
self.cat_idx = pd.Index(self.categories)
self.values = np.tile(self.categories, N)
self.codes = np.tile(range(len(self.categories)), N)
self.datetimes = pd.Series(pd.date_range('1995-01-01 00:00:00',
periods=N / 10,
freq='s'))
self.datetimes_with_nat = self.datetimes.copy()
self.datetimes_with_nat.iloc[-1] = pd.NaT
self.values_some_nan = list(np.tile(self.categories + [np.nan], N))
self.values_all_nan = [np.nan] * len(self.values)
self.values_all_int8 = np.ones(N, 'int8')
def time_regular(self):
pd.Categorical(self.values, self.categories)
def time_fastpath(self):
pd.Categorical(self.codes, self.cat_idx, fastpath=True)
def time_datetimes(self):
pd.Categorical(self.datetimes)
def time_datetimes_with_nat(self):
pd.Categorical(self.datetimes_with_nat)
def time_with_nan(self):
pd.Categorical(self.values_some_nan)
def time_all_nan(self):
pd.Categorical(self.values_all_nan)
def time_from_codes_all_int8(self):
pd.Categorical.from_codes(self.values_all_int8, self.categories)
class ValueCounts(object):
params = [True, False]
param_names = ['dropna']
def setup(self, dropna):
n = 5 * 10**5
arr = ['s%04d' % i for i in np.random.randint(0, n // 10, size=n)]
self.ts = pd.Series(arr).astype('category')
def time_value_counts(self, dropna):
self.ts.value_counts(dropna=dropna)
class Repr(object):
def setup(self):
self.sel = pd.Series(['s1234']).astype('category')
def time_rendering(self):
str(self.sel)
class SetCategories(object):
def setup(self):
n = 5 * 10**5
arr = ['s%04d' % i for i in np.random.randint(0, n // 10, size=n)]
self.ts = pd.Series(arr).astype('category')
def time_set_categories(self):
self.ts.cat.set_categories(self.ts.cat.categories[::2])
class Rank(object):
def setup(self):
N = 10**5
ncats = 100
self.s_str = pd.Series(tm.makeCategoricalIndex(N, ncats)).astype(str)
self.s_str_cat = self.s_str.astype('category')
with warnings.catch_warnings(record=True):
self.s_str_cat_ordered = self.s_str.astype('category',
ordered=True)
self.s_int = pd.Series(np.random.randint(0, ncats, size=N))
self.s_int_cat = self.s_int.astype('category')
with warnings.catch_warnings(record=True):
self.s_int_cat_ordered = self.s_int.astype('category',
ordered=True)
def time_rank_string(self):
self.s_str.rank()
def time_rank_string_cat(self):
self.s_str_cat.rank()
def time_rank_string_cat_ordered(self):
self.s_str_cat_ordered.rank()
def time_rank_int(self):
self.s_int.rank()
def time_rank_int_cat(self):
self.s_int_cat.rank()
def time_rank_int_cat_ordered(self):
self.s_int_cat_ordered.rank()
class Isin(object):
params = ['object', 'int64']
param_names = ['dtype']
def setup(self, dtype):
np.random.seed(1234)
n = 5 * 10**5
sample_size = 100
arr = [i for i in np.random.randint(0, n // 10, size=n)]
if dtype == 'object':
arr = ['s%04d' % i for i in arr]
self.sample = np.random.choice(arr, sample_size)
self.series = pd.Series(arr).astype('category')
def time_isin_categorical(self, dtype):
self.series.isin(self.sample)
class IsMonotonic(object):
def setup(self):
N = 1000
self.c = pd.CategoricalIndex(list('a' * N + 'b' * N + 'c' * N))
self.s = pd.Series(self.c)
def time_categorical_index_is_monotonic_increasing(self):
self.c.is_monotonic_increasing
def time_categorical_index_is_monotonic_decreasing(self):
self.c.is_monotonic_decreasing
def time_categorical_series_is_monotonic_increasing(self):
self.s.is_monotonic_increasing
def time_categorical_series_is_monotonic_decreasing(self):
self.s.is_monotonic_decreasing
class Contains(object):
def setup(self):
N = 10**5
self.ci = tm.makeCategoricalIndex(N)
self.c = self.ci.values
self.key = self.ci.categories[0]
def time_categorical_index_contains(self):
self.key in self.ci
def time_categorical_contains(self):
self.key in self.c
class CategoricalSlicing(object):
params = ['monotonic_incr', 'monotonic_decr', 'non_monotonic']
param_names = ['index']
def setup(self, index):
N = 10**6
values = list('a' * N + 'b' * N + 'c' * N)
indices = {
'monotonic_incr': pd.Categorical(values),
'monotonic_decr': pd.Categorical(reversed(values)),
'non_monotonic': pd.Categorical(list('abc' * N))}
self.data = indices[index]
self.scalar = 10000
self.list = list(range(10000))
self.cat_scalar = 'b'
def time_getitem_scalar(self, index):
self.data[self.scalar]
def time_getitem_slice(self, index):
self.data[:self.scalar]
def time_getitem_list_like(self, index):
self.data[[self.scalar]]
def time_getitem_list(self, index):
self.data[self.list]
def time_getitem_bool_array(self, index):
self.data[self.data == self.cat_scalar]
from .pandas_vb_common import setup # noqa: F401