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compat.py
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164 lines (128 loc) · 3.68 KB
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# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
# flake8: noqa
from distutils.version import LooseVersion
import itertools
import numpy as np
import sys
import six
from six import BytesIO, StringIO, string_types as py_string
PY26 = sys.version_info[:2] == (2, 6)
PY2 = sys.version_info[0] == 2
try:
import pandas as pd
pdver = LooseVersion(pd.__version__)
if pdver >= '0.20.0':
from pandas.api.types import DatetimeTZDtype
pdapi = pd.api.types
elif pdver >= '0.19.0':
from pandas.types.dtypes import DatetimeTZDtype
pdapi = pd.api.types
else:
from pandas.types.dtypes import DatetimeTZDtype
pdapi = pd.core.common
PandasSeries = pd.Series
Categorical = pd.Categorical
HAVE_PANDAS = True
except:
HAVE_PANDAS = False
class DatetimeTZDtype(object):
pass
class ClassPlaceholder(object):
def __init__(self, *args, **kwargs):
raise NotImplementedError
class PandasSeries(ClassPlaceholder):
pass
class Categorical(ClassPlaceholder):
pass
if PY26:
import unittest2 as unittest
else:
import unittest
if PY2:
import cPickle
try:
from cdecimal import Decimal
except ImportError:
from decimal import Decimal
unicode_type = unicode
lzip = zip
zip = itertools.izip
zip_longest = itertools.izip_longest
def dict_values(x):
return x.values()
range = xrange
long = long
def guid():
from uuid import uuid4
return uuid4().get_hex()
def u(s):
return unicode(s, "unicode_escape")
def tobytes(o):
if isinstance(o, unicode):
return o.encode('utf8')
else:
return o
def frombytes(o):
return o
def unichar(s):
return unichr(s)
else:
unicode_type = str
def lzip(*x):
return list(zip(*x))
long = int
zip = zip
zip_longest = itertools.zip_longest
def dict_values(x):
return list(x.values())
from decimal import Decimal
range = range
def guid():
from uuid import uuid4
return uuid4().hex
def u(s):
return s
def tobytes(o):
if isinstance(o, str):
return o.encode('utf8')
else:
return o
def frombytes(o):
return o.decode('utf8')
def unichar(s):
return chr(s)
try:
import cloudpickle as pickle
except ImportError:
try:
import cPickle as pickle
except ImportError:
import pickle
def encode_file_path(path):
import os
if isinstance(path, unicode_type):
# POSIX systems can handle utf-8. UTF8 is converted to utf16-le in
# libarrow
encoded_path = path.encode('utf-8')
else:
encoded_path = path
# Windows file system requires utf-16le for file names; Arrow C++ libraries
# will convert utf8 to utf16
return encoded_path
integer_types = six.integer_types + (np.integer,)
__all__ = []