[CodeStyle][C404] Unnecessary list comprehension (rewrite as a dict comprehension) (#51969)

python/paddle/distributed/passes/auto_parallel_sharding.py

@@ -1790,7 +1790,7 @@ def group_param(sharding_info, fuse_size):
 class ShardingInfo:
     def __init__(self, group, rank, params_grads, partition_algor):
         self.group = group
-        self.params_grads = dict([(p.name, (p, g)) for p, g in params_grads])
+        self.params_grads = {p.name: (p, g) for p, g in params_grads}
         assert len(self.params_grads) == len(
             set(self.params_grads)
         ), "found duplicated param in params_grads"

python/paddle/fluid/tests/unittests/distributed_fused_lamb_test_base.py

@@ -231,9 +231,7 @@ def run_model(use_distributed_lamb, use_fp16, use_master_param_norm, **kwargs):
 
     def reader():
         for _ in range(6):
-            yield dict(
-                [(grad.name, gen_random_grad_tensor(grad)) for grad in grads]
-            )
+            yield {grad.name: gen_random_grad_tensor(grad) for grad in grads}
 
     scope = paddle.static.Scope()
     fetch_list = params