[to #42322933] remove dependency en_core_web_sm from nlp.txt

将nlp.txt中的en_core_web_sm依赖删除，在代码中下载响应的依赖
        Link: https://code.alibaba-inc.com/Ali-MaaS/MaaS-lib/codereview/9432253

modelscope/preprocessors/space/fields/gen_field.py

@@ -7,11 +7,14 @@ from itertools import chain
 
 import numpy as np
 
+from ....utils.logger import get_logger
 from ....utils.nlp.space import ontology, utils
 from ....utils.nlp.space.db_ops import MultiWozDB
 from ....utils.nlp.space.utils import list2np
 from ..tokenizer import Tokenizer
 
+logger = get_logger()
+
 
 class BPETextField(object):
 
@@ -306,7 +309,21 @@ class MultiWOZBPETextField(BPETextField):
 
     def __init__(self, model_dir, config):
         super(MultiWOZBPETextField, self).__init__(config)
+
         import spacy
+        try:
+            import en_core_web_sm
+        except ImportError:
+            logger.warn('Miss module en_core_web_sm!')
+            logger.warn('We will download en_core_web_sm automatically.')
+            try:
+                spacy.cli.download('en_core_web_sm')
+            except Exception as e:
+                logger.error(e)
+                raise ImportError(
+                    'Download en_core_web_sm error. '
+                    'Please use \'python -m spacy download en_core_web_sm\' to download it by yourself!'
+                )
         self.nlp = spacy.load('en_core_web_sm')
 
         self.db = MultiWozDB(

requirements/nlp.txt

@@ -1,3 +1,2 @@
-http://ait-public.oss-cn-hangzhou-zmf.aliyuncs.com/jizhu/en_core_web_sm-2.3.1.tar.gz
 sofa>=1.0.5
 spacy>=2.3.5