strings.py

import numpy as np
from pandas import Series
import pandas.util.testing as tm


class Methods(object):

    goal_time = 0.2

    def setup(self):
        self.s = Series(tm.makeStringIndex(10**5))

    def time_cat(self):
        self.s.str.cat(sep=',')

    def time_center(self):
        self.s.str.center(100)

    def time_count(self):
        self.s.str.count('A')

    def time_endswith(self):
        self.s.str.endswith('A')

    def time_extract(self):
        self.s.str.extract('(\\w*)A(\\w*)')

    def time_findall(self):
        self.s.str.findall('[A-Z]+')

    def time_get(self):
        self.s.str.get(0)

    def time_len(self):
        self.s.str.len()

    def time_match(self):
        self.s.str.match('A')

    def time_pad(self):
        self.s.str.pad(100, side='both')

    def time_replace(self):
        self.s.str.replace('A', '\x01\x01')

    def time_slice(self):
        self.s.str.slice(5, 15, 2)

    def time_startswith(self):
        self.s.str.startswith('A')

    def time_strip(self):
        self.s.str.strip('A')

    def time_rstrip(self):
        self.s.str.rstrip('A')

    def time_lstrip(self):
        self.s.str.lstrip('A')

    def time_title(self):
        self.s.str.title()

    def time_upper(self):
        self.s.str.upper()

    def time_lower(self):
        self.s.str.lower()


class Repeat(object):

    goal_time = 0.2
    params = ['int', 'array']
    param_names = ['repeats']

    def setup(self, repeats):
        N = 10**5
        self.s = Series(tm.makeStringIndex(N))
        repeat = {'int': 1, 'array': np.random.randint(1, 3, N)}
        self.repeat = repeat[repeats]

    def time_repeat(self, repeats):
        self.s.str.repeat(self.repeat)


class Contains(object):

    goal_time = 0.2
    params = [True, False]
    param_names = ['regex']

    def setup(self, regex):
        self.s = Series(tm.makeStringIndex(10**5))

    def time_contains(self, regex):
        self.s.str.contains('A', regex=regex)


class Split(object):

    goal_time = 0.2
    params = [True, False]
    param_names = ['expand']

    def setup(self, expand):
        self.s = Series(tm.makeStringIndex(10**5)).str.join('--')

    def time_split(self, expand):
        self.s.str.split('--', expand=expand)


class Dummies(object):

    goal_time = 0.2

    def setup(self):
        self.s = Series(tm.makeStringIndex(10**5)).str.join('|')

    def time_get_dummies(self):
        self.s.str.get_dummies('|')


class Encode(object):

    goal_time = 0.2

    def setup(self):
        self.ser = Series(tm.makeUnicodeIndex())

    def time_encode_decode(self):
        self.ser.str.encode('utf-8').str.decode('utf-8')


class Slice(object):

    goal_time = 0.2

    def setup(self):
        self.s = Series(['abcdefg', np.nan] * 500000)

    def time_vector_slice(self):
        # GH 2602
        self.s.str[:5]