From: @alexyuyue
Reviewed-by: @robingrosman,@nsyca
Signed-off-by: @robingrosman

Signed-off-by: alex-yuyue <yue.yu1@huawei.com>

From: @hfarahat
Reviewed-by: 
Signed-off-by:

From: @ezphlow
Reviewed-by: 
Signed-off-by:

Fixed compile error

Fixed more testcases

And support multiple tensor as input in call method

Signed-off-by: alex-yuyue <yue.yu1@huawei.com>

From: @lixiachen
Reviewed-by: 
Signed-off-by:

From: @luoyang42
Reviewed-by: 
Signed-off-by:

fix sampler

From: @ezphlow
Reviewed-by: @robingrosman,@nsyca,@robingrosman
Signed-off-by: @robingrosman

Added validator checks

Added builtin sampler check

Added proper input check for samplers

From: @lixiachen
Reviewed-by: 
Signed-off-by:

update copyright

add examples to CacheClient docstring

From: @alexyuyue
Reviewed-by: 
Signed-off-by:

From: @xiefangqi
Reviewed-by: @liucunwei,@heleiwang
Signed-off-by: @liucunwei

Signed-off-by: alex-yuyue <yue.yu1@huawei.com>

From: @hfarahat
Reviewed-by: 
Signed-off-by:

From: @heleiwang
Reviewed-by: @liucunwei
Signed-off-by: @liucunwei

From: @lixiachen
Reviewed-by: 
Signed-off-by:

From: @luoyang42
Reviewed-by: 
Signed-off-by:

1. description of num_shard in datasets.py
2. add param validation for sampler
3. add description for add_child in sampler.py

From: @lixiachen
Reviewed-by: 
Signed-off-by:

From: @alexyuyue
Reviewed-by: 
Signed-off-by:

Signed-off-by: alex-yuyue <yue.yu1@huawei.com>

Signed-off-by: alex-yuyue <yue.yu1@huawei.com>

with comments from the peer view addressed

From: @ezphlow
Reviewed-by: 
Signed-off-by:

map validate params

Changing bindings

Change behavior of vision.cc

Added signature and changed Cmake

Compiling

Need to fix compile

Added compiling random transforms

python changes for decoupling

two failed test case remaining

Compiling random choice

passes all ut

Changed assert

review comments

Added validate params

add back return value

Fix lint

py lint fix

pylint 2

Addressing comments