“51d1afd7c43d7d23a3526fd48082669a75d0f33c”上不存在“python/paddle/distributed/metric/__init__.py”
* Unify fluid submodules to fluid module Change books just use `import fluid`, not submodules * Remove g_main_program/g_startup_program Use default_main_program/default_startup_program instead * Typo * Fix CI