From: @limingqi107
Reviewed-by: @cristoval,@wilfchen
Signed-off-by: @wilfchen

From: @zhoufeng54
Reviewed-by: @kisnwang,@xu-yfei
Signed-off-by: @xu-yfei

From: @sishuikang
Reviewed-by: @zhang_xue_tong,@ivss
Signed-off-by: @ivss

From: @huangbingjian
Reviewed-by: @ginfung,@zh_qh
Signed-off-by: @zh_qh

From: @lanzhineng
Reviewed-by: @ginfung,@zh_qh
Signed-off-by: @zh_qh

From: @simson_wu
Reviewed-by: @ginfung,@zh_qh
Signed-off-by: @zh_qh

From: @sunsuodong
Reviewed-by: @zhang_xue_tong,@zhanghaibo5
Signed-off-by: @zhang_xue_tong

From: @lianliguang
Reviewed-by: @jjfeing,@chujinjin
Signed-off-by: @chujinjin

From: @luopengting
Reviewed-by: @yelihua,@ouwenchang
Signed-off-by: @ouwenchang

From: @lixiachen
Reviewed-by: @mikef,@pandoublefeng
Signed-off-by: @pandoublefeng

From: @islam_amin
Reviewed-by: @yelihua,@yelihua,@john_tzanakakis
Signed-off-by: @john_tzanakakis

From: @jachua
Reviewed-by: @liangchenghui,@guoqi1024
Signed-off-by: @guoqi1024

From: @zhangzhaoju
Reviewed-by: @zh_qh,@ginfung
Signed-off-by: @zh_qh

From: @zhupuxu
Reviewed-by: @zhoufeng54,@jjfeing
Signed-off-by: @jjfeing

From: @chujinjin
Reviewed-by: @kisnwang,@zhoufeng54
Signed-off-by: @zhoufeng54

From: @zhangzhaoju
Reviewed-by: @zh_qh,@ginfung
Signed-off-by: @zh_qh

From: @sunsuodong
Reviewed-by: @zhanghaibo5,@jpc_chenjianping
Signed-off-by: @zhanghaibo5

From: @zhao_ting_v
Reviewed-by: @wuxuejian,@liangchenghui
Signed-off-by: @wuxuejian

From: @luopengting
Reviewed-by: @ouwenchang,@yelihua
Signed-off-by: @yelihua

From: @yeyunpeng2020
Reviewed-by: @ddwsky,@HilbertDavid
Signed-off-by: @ddwsky

From: @zhangbuxue
Reviewed-by: @guoqi1024,@zhanyuan1,@zhaizhiqiang
Signed-off-by: @zhaizhiqiang

From: @huangbo77
Reviewed-by: @wuxuejian,@oacjiewen
Signed-off-by: @wuxuejian

add config helper

add lenet example

add lenet evaluation

move data_path and output_path to builtin arguments

fix code spells and pylints

From: @lzkcode
Reviewed-by: @zhang_xue_tong,@zhanghaibo5
Signed-off-by: @zhang_xue_tong

From: @changzherui
Reviewed-by: @kingxian,@zhoufeng54
Signed-off-by: @kingxian

From: @changzherui
Reviewed-by: @kingxian,@zhoufeng54
Signed-off-by: @kingxian