

"""simple docstring"""






import numpy as np
import pandas as pd
from sklearn.preprocessing import MinMaxScaler
from tensorflow.keras.layers import LSTM, Dense
from tensorflow.keras.models import Sequential

if __name__ == "__main__":
 _lowerCAmelCase						=		pd.read_csv("""sample_data.csv""", header=None)
 _lowerCAmelCase						=		df.shape[:1][0]
 # If you're using some other dataset input the target column
 _lowerCAmelCase						=		df.iloc[:, 1:2]
 _lowerCAmelCase						=		actual_data.values.reshape(len_data, 1)
 _lowerCAmelCase						=		MinMaxScaler().fit_transform(actual_data)
 _lowerCAmelCase						=		1_0
 _lowerCAmelCase						=		5
 _lowerCAmelCase						=		2_0
 _lowerCAmelCase						=		len_data - periods * look_back
 _lowerCAmelCase						=		actual_data[:division]
 _lowerCAmelCase						=		actual_data[division - look_back :]
 _lowerCAmelCase	,   _lowerCAmelCase						=		[], []
 _lowerCAmelCase	,   _lowerCAmelCase						=		[], []

 for i in range(0, len(train_data) - forward_days - look_back + 1):
  train_x.append(train_data[i : i + look_back])
  train_y.append(train_data[i + look_back : i + look_back + forward_days])
 for i in range(0, len(test_data) - forward_days - look_back + 1):
  test_x.append(test_data[i : i + look_back])
  test_y.append(test_data[i + look_back : i + look_back + forward_days])
 _lowerCAmelCase						=		np.array(train_x)
 _lowerCAmelCase						=		np.array(test_x)
 _lowerCAmelCase						=		np.array([list(i.ravel()) for i in train_y])
 _lowerCAmelCase						=		np.array([list(i.ravel()) for i in test_y])

 _lowerCAmelCase						=		Sequential()
 model.add(LSTM(1_2_8, input_shape=(look_back, 1), return_sequences=True))
 model.add(LSTM(6_4, input_shape=(1_2_8, 1)))
 model.add(Dense(forward_days))
 model.compile(loss="""mean_squared_error""", optimizer="""adam""")
 _lowerCAmelCase						=		model.fit(
     x_train, y_train, epochs=1_5_0, verbose=1, shuffle=True, batch_size=4
 )
 _lowerCAmelCase						=		model.predict(x_test)








"""simple docstring"""






# Lint as: python3
import sys
from collections.abc import Mapping
from typing import TYPE_CHECKING, Dict, Optional

import numpy as np
import pyarrow as pa

from .. import config
from ..utils.logging import get_logger
from ..utils.py_utils import map_nested
from .formatting import TensorFormatter


if TYPE_CHECKING:
 import jax
 import jaxlib

_lowerCAmelCase						=		get_logger()

_lowerCAmelCase						=		None







class 	__UpperCamelCase    (    TensorFormatter[Mapping, "jax.Array", Mapping]						):

  def __init__(		self    ,_A=None    ,_A=None    ,**_A      ):
      '''simple docstring'''

      super().__init__(features=_A      )
      import jax
      from jaxlib.xla_client import Device

      if isinstance(_A    ,_A      ):
          raise ValueError(
              F"""Expected {device} to be a `str` not {type(_A      )}, as `jaxlib.xla_extension.Device` """
              'is not serializable neither with `pickle` nor with `dill`. Instead you can surround '
              'the device with `str()` to get its string identifier that will be internally mapped '
              'to the actual `jaxlib.xla_extension.Device`.'      )
      _lowerCAmelCase       :   int  =    device if isinstance(_A    ,_A      ) else str(jax.devices()[0]      )
      # using global variable since `jaxlib.xla_extension.Device` is not serializable neither
      # with `pickle` nor with `dill`, so we need to use a global variable instead
      global DEVICE_MAPPING
      if DEVICE_MAPPING is None:
          _lowerCAmelCase       :   Any  =    self._map_devices_to_str()
      if self.device not in list(DEVICE_MAPPING.keys()      ):
          logger.warning(
              F"""Device with string identifier {self.device} not listed among the available """
              F"""devices: {list(DEVICE_MAPPING.keys()      )}, so falling back to the default """
              F"""device: {str(jax.devices()[0]      )}."""      )
          _lowerCAmelCase       :   List[str]  =    str(jax.devices()[0]      )
      _lowerCAmelCase       :   int  =    jnp_array_kwargs

  @staticmethod
  def __lowerCamelCase		(		):
      '''simple docstring'''

      import jax

      return {str(_A      ): device for device in jax.devices()}

  def __lowerCamelCase		(		self    ,_A      ):
      '''simple docstring'''

      import jax
      import jax.numpy as jnp

      if isinstance(_A    ,_A      ) and column:
          if all(
              isinstance(_A    ,jax.Array      ) and x.shape == column[0].shape and x.dtype == column[0].dtype for x in column      ):
              return jnp.stack(_A    ,axis=0      )
      return column

  def __lowerCamelCase		(		self    ,_A      ):
      '''simple docstring'''

      import jax
      import jax.numpy as jnp

      if isinstance(_A    ,(str, bytes, type(_A      ))      ):
          return value
      elif isinstance(_A    ,(np.character, np.ndarray)      ) and np.issubdtype(value.dtype    ,np.character      ):
          return value.tolist()

      _lowerCAmelCase       :   Optional[Any]  =    {}

      if isinstance(_A    ,(np.number, np.ndarray)      ) and np.issubdtype(value.dtype    ,np.integer      ):
          # the default int precision depends on the jax config
          # see https://jax.readthedocs.io/en/latest/notebooks/Common_Gotchas_in_JAX.html#double-64bit-precision
          if jax.config.jax_enable_xaa:
              _lowerCAmelCase       :   List[str]  =    {'dtype': jnp.intaa}
          else:
              _lowerCAmelCase       :   Tuple  =    {'dtype': jnp.intaa}
      elif isinstance(_A    ,(np.number, np.ndarray)      ) and np.issubdtype(value.dtype    ,np.floating      ):
          _lowerCAmelCase       :   Any  =    {'dtype': jnp.floataa}
      elif config.PIL_AVAILABLE and "PIL" in sys.modules:
          import PIL.Image

          if isinstance(_A    ,PIL.Image.Image      ):
              _lowerCAmelCase       :   int  =    np.asarray(_A      )

        # using global variable since `jaxlib.xla_extension.Device` is not serializable neither
        # with `pickle` nor with `dill`, so we need to use a global variable instead
      global DEVICE_MAPPING
      if DEVICE_MAPPING is None:
          _lowerCAmelCase       :   Optional[Any]  =    self._map_devices_to_str()

      with jax.default_device(DEVICE_MAPPING[self.device]      ):
          # calling jnp.array on a np.ndarray does copy the data
          # see https://github.com/google/jax/issues/4486
          return jnp.array(_A    ,**{**default_dtype, **self.jnp_array_kwargs}      )

  def __lowerCamelCase		(		self    ,_A      ):
      '''simple docstring'''

      import jax

      # support for torch, tf, jax etc.
      if config.TORCH_AVAILABLE and "torch" in sys.modules:
          import torch

          if isinstance(_A    ,torch.Tensor      ):
              return self._tensorize(data_struct.detach().cpu().numpy()[()]      )
      if hasattr(_A    ,'__array__'      ) and not isinstance(_A    ,jax.Array      ):
          _lowerCAmelCase       :   Optional[Any]  =    data_struct.__array__()
      # support for nested types like struct of list of struct
      if isinstance(_A    ,np.ndarray      ):
          if data_struct.dtype == object:  # jax arrays cannot be instantied from an array of objects
              return self._consolidate([self.recursive_tensorize(_A      ) for substruct in data_struct]      )
      elif isinstance(_A    ,(list, tuple)      ):
          return self._consolidate([self.recursive_tensorize(_A      ) for substruct in data_struct]      )
      return self._tensorize(_A      )

  def __lowerCamelCase		(		self    ,_A      ):
      '''simple docstring'''

      return map_nested(self._recursive_tensorize    ,_A    ,map_list=_A      )

  def __lowerCamelCase		(		self    ,_A      ):
      '''simple docstring'''

      _lowerCAmelCase       :   Union[str, Any]  =    self.numpy_arrow_extractor().extract_row(_A      )
      _lowerCAmelCase       :   int  =    self.python_features_decoder.decode_row(_A      )
      return self.recursive_tensorize(_A      )

  def __lowerCamelCase		(		self    ,_A      ):
      '''simple docstring'''

      _lowerCAmelCase       :   Dict  =    self.numpy_arrow_extractor().extract_column(_A      )
      _lowerCAmelCase       :   List[Any]  =    self.python_features_decoder.decode_column(_A    ,pa_table.column_names[0]      )
      _lowerCAmelCase       :   Optional[Any]  =    self.recursive_tensorize(_A      )
      _lowerCAmelCase       :   Optional[Any]  =    self._consolidate(_A      )
      return column







  def __lowerCamelCase		(		self    ,_A      ):
      '''simple docstring'''

      _lowerCAmelCase       :   Tuple  =    self.numpy_arrow_extractor().extract_batch(_A      )
      _lowerCAmelCase       :   Any  =    self.python_features_decoder.decode_batch(_A      )
      _lowerCAmelCase       :   str  =    self.recursive_tensorize(_A      )
      for column_name in batch:
          _lowerCAmelCase       :   Optional[Any]  =    self._consolidate(batch[column_name]      )
      return batch





