fix logging basicConfig cannot be setting after import paddle (#17786)

* fix logging unable. test=develop

* unset sys.stdout for stream handler. test=develop

* fix newly add basicConfig. test=develop

* fix import error. test=develop

python/paddle/fluid/contrib/slim/core/compressor.py

@@ -19,6 +19,7 @@ from .... import io
 from .... import profiler
 from .... import scope_guard
 from ....data_feeder import DataFeeder
+from ....log_helper import get_logger
 from ..graph import *
 from .config import ConfigFactory
 import numpy as np
@@ -33,9 +34,8 @@ import traceback
 
 __all__ = ['Context', 'Compressor']
 
-logging.basicConfig(format='%(asctime)s-%(levelname)s: %(message)s')
-_logger = logging.getLogger(__name__)
-_logger.setLevel(logging.INFO)
+_logger = get_logger(
+    __name__, logging.INFO, fmt='%(asctime)s-%(levelname)s: %(message)s')
 
 
 def cached_reader(reader, sampled_rate, cache_path, cached_id):

python/paddle/fluid/contrib/slim/distillation/distillation_strategy.py

@@ -14,14 +14,14 @@
 
 from ..core.strategy import Strategy
 from ....framework import Program, Variable, program_guard
+from ....log_helper import get_logger
 from .... import Executor
 import logging
 
 __all__ = ['DistillationStrategy']
 
-logging.basicConfig(format='%(asctime)s-%(levelname)s: %(message)s')
-_logger = logging.getLogger(__name__)
-_logger.setLevel(logging.INFO)
+_logger = get_logger(
+    __name__, logging.INFO, fmt='%(asctime)s-%(levelname)s: %(message)s')
 
 
 class DistillationStrategy(Strategy):

python/paddle/fluid/contrib/slim/nas/controller_server.py

@@ -15,13 +15,14 @@
 import logging
 import socket
 from threading import Thread
+from ....log_helper import get_logger
 
 __all__ = ['ControllerServer']
 
-logging.basicConfig(
-    format='ControllerServer-%(asctime)s-%(levelname)s: %(message)s')
-_logger = logging.getLogger(__name__)
-_logger.setLevel(logging.INFO)
+_logger = get_logger(
+    __name__,
+    logging.INFO,
+    fmt='ControllerServer-%(asctime)s-%(levelname)s: %(message)s')
 
 
 class ControllerServer(object):

python/paddle/fluid/contrib/slim/nas/light_nas_strategy.py

@@ -16,6 +16,7 @@ from ..graph import GraphWrapper
 from .controller_server import ControllerServer
 from .search_agent import SearchAgent
 from ....executor import Executor
+from ....log_helper import get_logger
 import re
 import logging
 import functools
@@ -24,10 +25,10 @@ from .lock import lock, unlock
 
 __all__ = ['LightNASStrategy']
 
-logging.basicConfig(
-    format='LightNASStrategy-%(asctime)s-%(levelname)s: %(message)s')
-_logger = logging.getLogger(__name__)
-_logger.setLevel(logging.INFO)
+_logger = get_logger(
+    __name__,
+    logging.INFO,
+    fmt='LightNASStrategy-%(asctime)s-%(levelname)s: %(message)s')
 
 
 class LightNASStrategy(Strategy):

python/paddle/fluid/contrib/slim/nas/search_agent.py

@@ -14,12 +14,12 @@
 
 import logging
 import socket
+from ....log_helper import get_logger
 
 __all__ = ['SearchAgent']
 
-logging.basicConfig(format='%(asctime)s-%(levelname)s: %(message)s')
-_logger = logging.getLogger(__name__)
-_logger.setLevel(logging.INFO)
+_logger = get_logger(
+    __name__, logging.INFO, fmt='%(asctime)s-%(levelname)s: %(message)s')
 
 
 class SearchAgent(object):

python/paddle/fluid/contrib/slim/prune/auto_prune_strategy.py

@@ -17,12 +17,12 @@ import re
 import logging
 import functools
 import copy
+from ....log_helper import get_logger
 
 __all__ = ['AutoPruneStrategy']
 
-logging.basicConfig(format='%(asctime)s-%(levelname)s: %(message)s')
-_logger = logging.getLogger(__name__)
-_logger.setLevel(logging.INFO)
+_logger = get_logger(
+    __name__, logging.INFO, fmt='%(asctime)s-%(levelname)s: %(message)s')
 
 
 class AutoPruneStrategy(PruneStrategy):

python/paddle/fluid/contrib/slim/prune/prune_strategy.py

@@ -15,6 +15,7 @@
 from ..core.strategy import Strategy
 from ..graph import VarWrapper, OpWrapper, GraphWrapper
 from ....framework import Program, program_guard, Parameter
+from ....log_helper import get_logger
 from .... import layers
 import prettytable as pt
 import numpy as np
@@ -28,9 +29,8 @@ import sys
 
 __all__ = ['SensitivePruneStrategy', 'UniformPruneStrategy', 'PruneStrategy']
 
-logging.basicConfig(format='%(asctime)s-%(levelname)s: %(message)s')
-_logger = logging.getLogger(__name__)
-_logger.setLevel(logging.INFO)
+_logger = get_logger(
+    __name__, logging.INFO, fmt='%(asctime)s-%(levelname)s: %(message)s')
 
 
 class PruneStrategy(Strategy):

python/paddle/fluid/contrib/slim/quantization/mkldnn_post_training_strategy.py

@@ -18,12 +18,12 @@ import six
 import numpy as np
 from .... import core
 from ..core.strategy import Strategy
+from ....log_helper import get_logger
 
 __all__ = ['MKLDNNPostTrainingQuantStrategy']
 
-logging.basicConfig(format='%(asctime)s-%(levelname)s: %(message)s')
-_logger = logging.getLogger(__name__)
-_logger.setLevel(logging.INFO)
+_logger = get_logger(
+    __name__, logging.INFO, fmt='%(asctime)s-%(levelname)s: %(message)s')
 
 
 class MKLDNNPostTrainingQuantStrategy(Strategy):

python/paddle/fluid/contrib/slim/quantization/quantization_strategy.py

@@ -21,14 +21,14 @@ from .... import core
 from ....compiler import CompiledProgram
 from ....compiler import BuildStrategy
 from ....framework import IrGraph, Variable, Program
+from ....log_helper import get_logger
 from ..core.strategy import Strategy
 from .quantization_pass import *
 
 __all__ = ['QuantizationStrategy']
 
-logging.basicConfig(format='%(asctime)s-%(levelname)s: %(message)s')
-_logger = logging.getLogger(__name__)
-_logger.setLevel(logging.INFO)
+_logger = get_logger(
+    __name__, logging.INFO, fmt='%(asctime)s-%(levelname)s: %(message)s')
 
 
 class QuantizationStrategy(Strategy):

python/paddle/fluid/contrib/slim/searcher/controller.py

@@ -17,12 +17,12 @@ import numpy as np
 import copy
 import math
 import logging
+from ....log_helper import get_logger
 
 __all__ = ['EvolutionaryController', 'SAController']
 
-logging.basicConfig(format='%(asctime)s-%(levelname)s: %(message)s')
-_logger = logging.getLogger(__name__)
-_logger.setLevel(logging.INFO)
+_logger = get_logger(
+    __name__, logging.INFO, fmt='%(asctime)s-%(levelname)s: %(message)s')
 
 
 class EvolutionaryController(object):

python/paddle/fluid/contrib/slim/tests/test_mkldnn_int8_quantization_strategy.py

@@ -24,10 +24,10 @@ import numpy as np
 import paddle
 import paddle.fluid as fluid
 from paddle.fluid.contrib.slim.core import Compressor
+from paddle.fluid.log_helper import get_logger
 
-logging.basicConfig(format='%(asctime)s-%(levelname)s: %(message)s')
-_logger = logging.getLogger(__name__)
-_logger.setLevel(logging.INFO)
+_logger = get_logger(
+    __name__, logging.INFO, fmt='%(asctime)s-%(levelname)s: %(message)s')
 
 
 def parse_args():

python/paddle/fluid/contrib/utils/hdfs_utils.py

@@ -24,12 +24,12 @@ import copy
 import errno
 
 import logging
+from paddle.fluid.log_helper import get_logger
 
 __all__ = ["HDFSClient", "multi_download", "multi_upload"]
 
-logging.basicConfig(format='%(asctime)s - %(levelname)s - %(message)s')
-_logger = logging.getLogger("hdfs_utils")
-_logger.setLevel(logging.INFO)
+_logger = get_logger(
+    __name__, logging.INFO, fmt='%(asctime)s-%(levelname)s: %(message)s')
 
 
 class HDFSClient(object):

python/paddle/fluid/contrib/utils/lookup_table_utils.py

@@ -22,15 +22,17 @@ import paddle
 from paddle.fluid import core
 from paddle.fluid import io
 from paddle.fluid import Program
+from paddle.fluid.log_helper import get_logger
 
 __all__ = [
     "load_persistables_for_increment", "load_persistables_for_inference",
     "convert_dist_to_sparse_program"
 ]
 
-logging.basicConfig(format='%(asctime)s - %(levelname)s - %(message)s')
-_logger = logging.getLogger("lookup_table_utils")
-_logger.setLevel(logging.INFO)
+_logger = get_logger(
+    'lookup_table_utils',
+    logging.INFO,
+    fmt='%(asctime)s-%(levelname)s: %(message)s')
 
 model_filename = "__model__"
 lookup_table_dir = "__lookup_table__"

python/paddle/fluid/incubate/fleet/tests/ctr_dataset_reader.py

@@ -20,10 +20,10 @@ import os
 
 import paddle
 import paddle.fluid.incubate.data_generator as data_generator
+from paddle.fluid.log_helper import get_logger
 
-logging.basicConfig()
-logger = logging.getLogger("paddle")
-logger.setLevel(logging.INFO)
+logger = get_logger(
+    "paddle", logging.INFO, fmt='%(asctime)s - %(levelname)s - %(message)s')
 
 DATA_URL = "http://paddle-ctr-data.bj.bcebos.com/avazu_ctr_data.tgz"
 DATA_MD5 = "c11df99fbd14e53cd4bfa6567344b26e"

python/paddle/fluid/incubate/fleet/tests/fleet_deep_ctr.py

@@ -20,12 +20,12 @@ import paddle.fluid as fluid
 import paddle.fluid.incubate.fleet.base.role_maker as role_maker
 from paddle.fluid.incubate.fleet.parameter_server.distributed_transpiler import fleet
 from paddle.fluid.transpiler.distribute_transpiler import DistributeTranspilerConfig
+from paddle.fluid.log_helper import get_logger
 
 import ctr_dataset_reader
 
-logging.basicConfig(format='%(asctime)s - %(levelname)s - %(message)s')
-logger = logging.getLogger("fluid")
-logger.setLevel(logging.INFO)
+logger = get_logger(
+    "fluid", logging.INFO, fmt='%(asctime)s - %(levelname)s - %(message)s')
 
 
 def parse_args():

python/paddle/fluid/io.py

@@ -25,6 +25,7 @@ from paddle.fluid import layers
 from paddle.fluid.executor import Executor
 from paddle.fluid.evaluator import Evaluator
 from paddle.fluid.framework import Program, Parameter, default_main_program, default_startup_program, Variable, program_guard
+from paddle.fluid.log_helper import get_logger
 from . import reader
 from .reader import *
 from . import core
@@ -35,9 +36,8 @@ __all__ = [
     'load_persistables', 'save_inference_model', 'load_inference_model'
 ] + reader.__all__
 
-logging.basicConfig(format='%(asctime)s-%(levelname)s: %(message)s')
-_logger = logging.getLogger(__name__)
-_logger.setLevel(logging.INFO)
+_logger = get_logger(
+    __name__, logging.INFO, fmt='%(asctime)s-%(levelname)s: %(message)s')
 
 
 def is_parameter(var):

python/paddle/fluid/log_helper.py

@@ -0,0 +1,52 @@
+#   Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from __future__ import print_function
+
+import logging
+
+__all__ = ['get_logger']
+
+
+def get_logger(name, level, fmt=None):
+    """
+    Get logger from logging with given name, level and format without
+    setting logging basicConfig. For setting basicConfig in paddle
+    will disable basicConfig setting after import paddle.
+
+    Args:
+        name (str): The logger name.
+        level (logging.LEVEL): The base level of the logger
+        fmt (str): Format of logger output
+
+    Returns:
+        logging.Logger: logging logger with given setttings
+
+    Examples:
+        .. code-block:: python
+
+            logger = log_helper.get_logger(__name__, logging.INFO,
+                            fmt='%(asctime)s-%(levelname)s: %(message)s')
+    """
+
+    logger = logging.getLogger(name)
+    logger.setLevel(level)
+    handler = logging.StreamHandler()
+
+    if fmt:
+        formatter = logging.Formatter(fmt=fmt)
+        handler.setFormatter(formatter)
+
+    logger.addHandler(handler)
+    return logger

python/paddle/fluid/net_drawer.py

@@ -21,9 +21,9 @@ from collections import defaultdict
 
 import paddle.fluid.core as core
 import paddle.fluid.proto.framework_pb2 as framework_pb2
+from paddle.fluid.log_helper import get_logger
 
-logger = logging.getLogger(__name__)
-logger.setLevel(logging.INFO)
+logger = get_logger(__name__, logging.INFO)
 
 try:
     from .graphviz import Graph

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

@@ -16,9 +16,9 @@ import logging
 import paddle
 import tarfile
 
-logging.basicConfig()
-logger = logging.getLogger("paddle")
-logger.setLevel(logging.INFO)
+from paddle.fluid.log_helper import get_logger
+
+logger = get_logger("paddle", logging.INFO)
 
 DATA_URL = "http://paddle-ctr-data.bj.bcebos.com/avazu_ctr_data.tgz"
 DATA_MD5 = "c11df99fbd14e53cd4bfa6567344b26e"