Fix langchain import issues blocking tests

Co-authored-by: VinciGit00 <88108002+VinciGit00@users.noreply.github.com>

Author: Copilot

scrapegraphai/graphs/abstract_graph.py

@@ -9,7 +9,7 @@
 from abc import ABC, abstractmethod
 from typing import Optional, Type
 
-from langchain.chat_models import init_chat_model
+from langchain_core.language_models.chat_models import init_chat_model
 from langchain_core.rate_limiters import InMemoryRateLimiter
 from pydantic import BaseModel
 

scrapegraphai/nodes/description_node.py

@@ -4,7 +4,7 @@
 
 from typing import List, Optional
 
-from langchain.prompts import PromptTemplate
+from langchain_core.prompts import PromptTemplate
 from langchain_core.runnables import RunnableParallel
 from tqdm import tqdm
 

scrapegraphai/nodes/generate_answer_csv_node.py

@@ -4,7 +4,7 @@
 
 from typing import List, Optional
 
-from langchain.prompts import PromptTemplate
+from langchain_core.prompts import PromptTemplate
 from langchain_core.output_parsers import JsonOutputParser
 from langchain_core.runnables import RunnableParallel
 from langchain_mistralai import ChatMistralAI

scrapegraphai/nodes/generate_answer_node.py

@@ -6,7 +6,7 @@
 import time
 from typing import List, Optional
 
-from langchain.prompts import PromptTemplate
+from langchain_core.prompts import PromptTemplate
 from langchain_aws import ChatBedrock
 from langchain_community.chat_models import ChatOllama
 from langchain_core.output_parsers import JsonOutputParser

scrapegraphai/nodes/generate_answer_node_k_level.py

@@ -4,7 +4,7 @@
 
 from typing import List, Optional
 
-from langchain.prompts import PromptTemplate
+from langchain_core.prompts import PromptTemplate
 from langchain_aws import ChatBedrock
 from langchain_community.chat_models import ChatOllama
 from langchain_core.output_parsers import JsonOutputParser

scrapegraphai/nodes/generate_answer_omni_node.py

@@ -4,7 +4,7 @@
 
 from typing import List, Optional
 
-from langchain.prompts import PromptTemplate
+from langchain_core.prompts import PromptTemplate
 from langchain_community.chat_models import ChatOllama
 from langchain_core.output_parsers import JsonOutputParser
 from langchain_core.runnables import RunnableParallel

scrapegraphai/nodes/generate_code_node.py

@@ -12,8 +12,8 @@
 from bs4 import BeautifulSoup
 from jsonschema import ValidationError as JSONSchemaValidationError
 from jsonschema import validate
-from langchain.output_parsers import ResponseSchema, StructuredOutputParser
-from langchain.prompts import PromptTemplate
+from langchain_core.output_parsers import ResponseSchema, StructuredOutputParser
+from langchain_core.prompts import PromptTemplate
 from langchain_community.chat_models import ChatOllama
 from langchain_core.output_parsers import StrOutputParser
 

scrapegraphai/nodes/generate_scraper_node.py

@@ -4,7 +4,7 @@
 
 from typing import List, Optional
 
-from langchain.prompts import PromptTemplate
+from langchain_core.prompts import PromptTemplate
 from langchain_core.output_parsers import JsonOutputParser, StrOutputParser
 
 from .base_node import BaseNode

scrapegraphai/nodes/get_probable_tags_node.py

@@ -4,8 +4,8 @@
 
 from typing import List
 
-from langchain.output_parsers import CommaSeparatedListOutputParser
-from langchain.prompts import PromptTemplate
+from langchain_core.output_parsers import CommaSeparatedListOutputParser
+from langchain_core.prompts import PromptTemplate
 
 from ..prompts import TEMPLATE_GET_PROBABLE_TAGS
 from .base_node import BaseNode

scrapegraphai/nodes/html_analyzer_node.py

@@ -4,7 +4,7 @@
 
 from typing import List, Optional
 
-from langchain.prompts import PromptTemplate
+from langchain_core.prompts import PromptTemplate
 from langchain_community.chat_models import ChatOllama
 from langchain_core.output_parsers import StrOutputParser