add new python typing

Author: KsanaKozlova

numba_typing/new_typing.py

@@ -0,0 +1,127 @@
+import typing
+import numpy as np
+import pandas as pd
+from abc import abstractmethod
+import typing_extensions
+
+T = typing.TypeVar('T')
+S = typing.TypeVar('S')
+
+
+class Array(typing.Generic[T, S]):
+    '''Annotation for np.ndarray
+    Use square brackets to indicate type and dimension
+    For example: Array[int, typing_extensions.Literal[4]]'''
+    __slots__ = ()
+
+    @abstractmethod
+    def __array__(self) -> np.ndarray:
+        pass
+
+
+class Series(typing.Generic[T, S]):
+    '''Annotation for pandas.Series
+    For expample: Series[int, str]
+    int - type of index
+    str - type of value'''
+    __slots__ = ()
+
+    @abstractmethod
+    def __array__(self) -> pd.core.series.Series:
+        pass
+
+
+class int8(typing_extensions.Protocol):
+    """Annotation for int8"""
+    @abstractmethod
+    def __int__(self) -> int:
+        pass
+
+
+class int16(typing_extensions.Protocol):
+    """Annotation for int16"""
+    @abstractmethod
+    def __int__(self) -> int:
+        pass
+
+
+class int32(typing_extensions.Protocol):
+    """Annotation for int32"""
+    @abstractmethod
+    def __int__(self) -> int:
+        pass
+
+
+class int64(typing_extensions.Protocol):
+    """Annotation for int64"""
+    @abstractmethod
+    def __int__(self) -> int:
+        pass
+
+
+class unint8(typing_extensions.Protocol):
+    """Annotation for unsigned int8"""
+    @abstractmethod
+    def __int__(self) -> int:
+        pass
+
+
+class unint16(typing_extensions.Protocol):
+    """Annotation for unsigned int16"""
+    @abstractmethod
+    def __int__(self) -> int:
+        pass
+
+
+class unint32(typing_extensions.Protocol):
+    """Annotation for unsigned int32"""
+    @abstractmethod
+    def __int__(self) -> int:
+        pass
+
+
+class unint64(typing_extensions.Protocol):
+    """Annotation for unsigned int64"""
+    @abstractmethod
+    def __int__(self) -> int:
+        pass
+
+
+class float32(typing_extensions.Protocol):
+    """Annotation for float32"""
+    @abstractmethod
+    def __float__(self) -> float:
+        pass
+
+
+class float64(typing_extensions.Protocol):
+    """Annotation for float32"""
+    @abstractmethod
+    def __float__(self) -> float:
+        pass
+
+
+number = typing.Union[int, float]  # numba's number type
+
+
+T_int = typing.TypeVar('T_int', int8, int16, int32, int64)
+T_float = typing.TypeVar('T_float', float32, float64)
+
+
+class LiteralType(typing.Generic[T]):
+    pass
+
+
+class PreferLiteralType(typing.Generic[T]):
+    pass
+
+
+class PreferNonLiteralType(typing.Generic[T]):
+    pass
+
+
+L_int = LiteralType[int]
+L_float = LiteralType[float]
+
+TL_int = LiteralType[T_int]
+TL_float = LiteralType[T_float]