yobx.helpers¶

modules

Other functions¶

yobx.helpers.string_type(obj: Any, with_shape: bool = False, with_min_max: bool = False, with_device: bool = False, ignore: bool = False, limit: int = 20) → str[source][source]¶

Displays the types of an object as a string.

Parameters:

obj – any
with_shape – displays shapes as well
with_min_max – displays information about the values
with_device – display the device
ignore – if True, just prints the type for unknown types

Returns:

str

The function displays something like the following for a tensor.

T7s2x7[0.5:6:A3.56]
^^^+-^^----+------^
|| |       |
|| |       +-- information about the content of a tensor or array
|| |           [min,max:A<average>]
|| |
|| +-- a shape
||
|+-- integer following the code defined by onnx.TensorProto,
|    7 is onnx.TensorProto.INT64 (see onnx_dtype_name)
|
+-- A,T,F
    A is an array from numpy
    T is a Tensor from pytorch
    F is a FakeTensor from pytorch

The element types for a tensor are displayed as integer to shorten the message. The semantic is defined by onnx.TensorProto and can be obtained by yobx.helpers.onnx_helper.onnx_dtype_name().

<<<

from yobx.helpers import string_type

print(string_type((1, ["r", 6.6])))

>>>

    (int,#2[str,float])

With pytorch:

<<<

import torch
from yobx.helpers import string_type

inputs = (
    torch.rand((3, 4), dtype=torch.float16),
    [
        torch.rand((5, 6), dtype=torch.float16),
        torch.rand((5, 6, 7), dtype=torch.float16),
    ],
)

# with shapes
print(string_type(inputs, with_shape=True))

# with min max
print(string_type(inputs, with_shape=True, with_min_max=True))

>>>

    (T10s3x4,#2[T10s5x6,T10s5x6x7])
    (T10s3x4[0.044921875,0.7685546875:A0.3328857421875],#2[T10s5x6[0.03564453125,0.99755859375:A0.4521484375],T10s5x6x7[0.0068359375,0.99462890625:A0.48237537202380953]])

yobx.helpers.max_diff(expected: Any, got: Any, level: int = 0, flatten: bool = False, debug_info: List[str] | None = None, begin: int = 0, end: int = -1, _index: int = 0, allow_unique_tensor_with_list_of_one_element: bool = True, hist: bool | List[float] | None = None, skip_none: bool = False) → Dict[str, float | int | Tuple[Any, ...]][source][source]¶

Returns the maximum discrepancy.

Parameters:

expected – expected values
got – values
level – for embedded outputs, used for debug purpposes
flatten – flatten outputs
debug_info – debug information
begin – first output to considered
end – last output to considered (-1 for the last one)
_index – used with begin and end
allow_unique_tensor_with_list_of_one_element – allow a comparison between a single tensor and a list of one tensor
hist – compute an histogram of the discrepancies
skip_none – skips none value

Returns:

dictionary with many values

abs: max absolute error
rel: max relative error
sum: sum of the errors
n: number of outputs values, if there is one
output, this number will be the number of elements of this output
dnan: difference in the number of nan
dev: tensor on the same device, if applicable

You may use string_diff() to display the discrepancies in one string.