update tslibs imports (#21816)

Author: jbrockmendel

pandas/_libs/__init__.py

@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 # flake8: noqa
 
-from .tslib import iNaT, NaT, Timestamp, Timedelta, OutOfBoundsDatetime
+from .tslibs import iNaT, NaT, Timestamp, Timedelta, OutOfBoundsDatetime
 
 # TODO
 # period is directly dependent on tslib and imports python

pandas/_libs/index.pyx

@@ -25,8 +25,7 @@ from tslibs.conversion cimport maybe_datetimelike_to_i8
 from hashtable cimport HashTable
 
 from pandas._libs import algos, hashtable as _hash
-from pandas._libs.tslibs import period as periodlib
-from pandas._libs.tslib import Timestamp, Timedelta
+from pandas._libs.tslibs import Timestamp, Timedelta, period as periodlib
 from pandas._libs.missing import checknull
 
 cdef int64_t iNaT = util.get_nat()

pandas/_libs/interval.pyx

@@ -5,7 +5,7 @@ cimport util
 cimport cython
 import cython
 from numpy cimport ndarray
-from tslib import Timestamp
+from tslibs import Timestamp
 from tslibs.timezones cimport tz_compare
 
 from cpython.object cimport (Py_EQ, Py_NE, Py_GT, Py_LT, Py_GE, Py_LE,

pandas/_libs/lib.pyx

@@ -1,6 +1,5 @@
+# -*- coding: utf-8 -*-
 # cython: profile=False
-import operator
-
 cimport cython
 from cython cimport Py_ssize_t
 

pandas/_libs/missing.pyx

@@ -15,7 +15,6 @@ cimport util
 
 from tslibs.np_datetime cimport get_timedelta64_value, get_datetime64_value
 from tslibs.nattype import NaT
-from tslibs.nattype cimport is_null_datetimelike
 
 cdef double INF = <double> np.inf
 cdef double NEGINF = -INF

pandas/_libs/reshape.pyx

@@ -4,11 +4,9 @@ cimport cython
 from cython cimport Py_ssize_t
 
 import numpy as np
-cimport numpy as cnp
 from numpy cimport (ndarray,
                     int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t,
                     uint32_t, uint64_t, float32_t, float64_t)
-cnp.import_array()
 
 
 cdef double NaN = <double> np.NaN

pandas/_libs/src/util.pxd

@@ -100,6 +100,7 @@ cdef extern from "headers/stdint.h":
     enum: INT64_MAX
     enum: INT64_MIN
 
+
 cdef inline object get_value_at(ndarray arr, object loc):
     cdef:
         Py_ssize_t i, sz
@@ -119,6 +120,7 @@ cdef inline object get_value_at(ndarray arr, object loc):
 
     return get_value_1d(arr, i)
 
+
 cdef inline set_value_at_unsafe(ndarray arr, object loc, object value):
     """Sets a value into the array without checking the writeable flag.
 
@@ -153,12 +155,14 @@ cdef inline set_value_at(ndarray arr, object loc, object value):
 cdef inline is_array(object o):
     return cnp.PyArray_Check(o)
 
+
 cdef inline bint _checknull(object val):
     try:
         return val is None or (cpython.PyFloat_Check(val) and val != val)
     except ValueError:
         return False
 
+
 cdef inline bint is_period_object(object val):
     return getattr(val, '_typ', '_typ') == 'period'
 

pandas/_libs/tslib.pyx

@@ -38,14 +38,12 @@ import pytz
 
 
 from tslibs.timedeltas cimport cast_from_unit
-from tslibs.timedeltas import Timedelta, ints_to_pytimedelta  # noqa:F841
 from tslibs.timezones cimport (is_utc, is_tzlocal, is_fixed_offset,
                                treat_tz_as_pytz, get_dst_info)
 from tslibs.conversion cimport (tz_convert_single, _TSObject,
                                 convert_datetime_to_tsobject,
                                 get_datetime64_nanos,
                                 tz_convert_utc_to_tzlocal)
-from tslibs.conversion import tz_convert_single, normalize_date  # noqa:F841
 
 from tslibs.nattype import NaT, nat_strings, iNaT
 from tslibs.nattype cimport checknull_with_nat, NPY_NAT

pandas/_libs/tslibs/frequencies.pyx

@@ -5,7 +5,6 @@ import re
 cimport cython
 
 cimport numpy as cnp
-from numpy cimport int64_t
 cnp.import_array()
 
 from util cimport is_integer_object, is_string_object

pandas/_libs/tslibs/offsets.pyx

@@ -11,7 +11,6 @@ from cpython.datetime cimport (PyDateTime_IMPORT, PyDateTime_CheckExact,
 PyDateTime_IMPORT
 
 from dateutil.relativedelta import relativedelta
-from pytz import UTC
 
 import numpy as np
 cimport numpy as cnp
@@ -24,7 +23,6 @@ from util cimport is_string_object, is_integer_object
 from ccalendar import MONTHS, DAYS
 from ccalendar cimport get_days_in_month, dayofweek
 from conversion cimport tz_convert_single, pydt_to_i8, localize_pydatetime
-from frequencies cimport get_freq_code
 from nattype cimport NPY_NAT
 from np_datetime cimport (pandas_datetimestruct,
                           dtstruct_to_dt64, dt64_to_dtstruct)