add config saver

fastNLP/saver/config_saver.py

@@ -0,0 +1,35 @@
+import os
+
+import json
+import configparser
+
+from fastNLP.loader.config_loader import ConfigSection, ConfigLoader
+from fastNLP.saver.logger import create_logger
+
+class ConfigSaver(object):
+
+    def __init__(self, file_path):
+        self.file_path = file_path
+
+    def save_section(self, section_name, section):
+        cfg = configparser.ConfigParser()
+        if not os.path.exists(self.file_path):
+            raise FileNotFoundError("config file {} not found. ".format(self.file_path))
+        cfg.read(self.file_path)
+        if section_name not in cfg:
+            cfg.add_section(section_name)
+        gen_sec = cfg[section_name]
+        for key in section:
+            if key in gen_sec.keys():
+                try:
+                    val = json.load(gen_sec[key])
+                except Exception as e:
+                    print("cannot load attribute %s in section %s"
+                          % (key, section_name))
+                try:
+                    assert section[key] == val
+                except Exception as e:
+                    logger = create_logger(__name__, "./config_saver.log")
+                    logger.warning("this is a warning #TODO")
+            cfg.set(section_name,key, section[key])
+        cfg.write(open(self.file_path, 'w'))