rename get_txt to get_text (#2649)

### What problem does this PR solve?



### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

deepdoc/parser/utils.py

 from rag.nlp import find_codec
 
 
-def get_txt(fnm: str, binary=None) -> str:
+def get_text(fnm: str, binary=None) -> str:
     txt = ""
     if binary:
         encoding = find_codec(binary)

rag/app/book.py

 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 #
-import copy
 from tika import parser
 import re
 from io import BytesIO

rag/app/laws.py

 from docx import Document
 
 from api.db import ParserType
-from deepdoc.parser.utils import get_txt
+from deepdoc.parser.utils import get_text
 from rag.nlp import bullets_category, is_english, tokenize, remove_contents_table, hierarchical_merge, \
     make_colon_as_title, add_positions, tokenize_chunks, find_codec, docx_question_level
 from rag.nlp import rag_tokenizer
 
     elif re.search(r"\.txt$", filename, re.IGNORECASE):
         callback(0.1, "Start to parse.")
-        txt = get_txt(filename, binary)
+        txt = get_text(filename, binary)
         sections = txt.split("\n")
         sections = [l for l in sections if l]
         callback(0.8, "Finish parsing.")

rag/app/one.py

 from io import BytesIO
 import re
 
-from deepdoc.parser.utils import get_txt
+from deepdoc.parser.utils import get_text
 from rag.app import laws
-from rag.nlp import rag_tokenizer, tokenize, find_codec
+from rag.nlp import rag_tokenizer, tokenize
 from deepdoc.parser import PdfParser, ExcelParser, PlainParser, HtmlParser
 
 
 
     elif re.search(r"\.(txt|md|markdown)$", filename, re.IGNORECASE):
         callback(0.1, "Start to parse.")
-        txt = get_txt(filename, binary)
+        txt = get_text(filename, binary)
         sections = txt.split("\n")
         sections = [s for s in sections if s]
         callback(0.8, "Finish parsing.")

rag/app/qa.py

 from nltk import word_tokenize
 from openpyxl import load_workbook
 
-from deepdoc.parser.utils import get_txt
-from rag.nlp import is_english, random_choices, find_codec, qbullets_category, add_positions, has_qbullet, docx_question_level
+from deepdoc.parser.utils import get_text
+from rag.nlp import is_english, random_choices, qbullets_category, add_positions, has_qbullet, docx_question_level
 from rag.nlp import rag_tokenizer, tokenize_table, concat_img
 from rag.settings import cron_logger
 from deepdoc.parser import PdfParser, ExcelParser, DocxParser
 from docx import Document
 from PIL import Image
 from markdown import markdown
+
+
 class Excel(ExcelParser):
     def __call__(self, fnm, binary=None, callback=None):
         if not binary:
         return res
     elif re.search(r"\.(txt|csv)$", filename, re.IGNORECASE):
         callback(0.1, "Start to parse.")
-        txt = get_txt(filename, binary)
+        txt = get_text(filename, binary)
         lines = txt.split("\n")
         comma, tab = 0, 0
         for l in lines:
         return res
     elif re.search(r"\.(md|markdown)$", filename, re.IGNORECASE):
         callback(0.1, "Start to parse.")
-        txt = get_txt(filename, binary)
+        txt = get_text(filename, binary)
         lines = txt.split("\n")
         last_question, last_answer = "", ""
         question_stack, level_stack = [], []

rag/app/table.py

 
 from api.db.services.knowledgebase_service import KnowledgebaseService
 from deepdoc.parser.utils import get_text
-from rag.nlp import rag_tokenizer, is_english, tokenize, find_codec
+from rag.nlp import rag_tokenizer, tokenize
 from deepdoc.parser import ExcelParser