Remove LLM Bash and related bash utilities (langchain-ai#11619)

Deprecate LLMBash and related bash utilities

libs/langchain/langchain/__init__.py

@@ -72,11 +72,15 @@ def __getattr__(name: str) -> Any:
 
         return ConversationChain
     elif name == "LLMBashChain":
-        from langchain.chains import LLMBashChain
+        raise ImportError(
+            "This module has been moved to langchain-experimental. "
+            "For more details: "
+            "https://github.com/langchain-ai/langchain/discussions/11352."
+            "To access this code, install it with `pip install langchain-experimental`."
+            "`from langchain_experimental.llm_bash.base "
+            "import LLMBashChain`"
+        )
 
-        _warn_on_import(name)
-
-        return LLMBashChain
     elif name == "LLMChain":
         from langchain.chains import LLMChain
 

libs/langchain/langchain/chains/__init__.py

@@ -44,7 +44,6 @@
 from langchain.chains.graph_qa.sparql import GraphSparqlQAChain
 from langchain.chains.hyde.base import HypotheticalDocumentEmbedder
 from langchain.chains.llm import LLMChain
-from langchain.chains.llm_bash.base import LLMBashChain
 from langchain.chains.llm_checker.base import LLMCheckerChain
 from langchain.chains.llm_math.base import LLMMathChain
 from langchain.chains.llm_requests import LLMRequestsChain
@@ -94,7 +93,6 @@
     "HugeGraphQAChain",
     "HypotheticalDocumentEmbedder",
     "KuzuQAChain",
-    "LLMBashChain",
     "LLMChain",
     "LLMCheckerChain",
     "LLMMathChain",

libs/langchain/langchain/chains/llm_bash/__init__.py

@@ -1 +1,12 @@
-"""Chain that interprets a prompt and executes bash code to perform bash operations."""
+def raise_on_import() -> None:
+    """Raise an error on import since is deprecated."""
+    raise ImportError(
+        "This module has been moved to langchain-experimental. "
+        "For more details: https://github.com/langchain-ai/langchain/discussions/11352."
+        "To access this code, install it with `pip install langchain-experimental`."
+        "`from langchain_experimental.llm_bash.base "
+        "import LLMBashChain`"
+    )
+
+
+raise_on_import()

libs/langchain/langchain/chains/loading.py

@@ -15,7 +15,6 @@
 from langchain.chains.graph_qa.cypher import GraphCypherQAChain
 from langchain.chains.hyde.base import HypotheticalDocumentEmbedder
 from langchain.chains.llm import LLMChain
-from langchain.chains.llm_bash.base import LLMBashChain
 from langchain.chains.llm_checker.base import LLMCheckerChain
 from langchain.chains.llm_math.base import LLMMathChain
 from langchain.chains.llm_requests import LLMRequestsChain
@@ -183,7 +182,9 @@ def _load_reduce_documents_chain(config: dict, **kwargs: Any) -> ReduceDocuments
     )
 
 
-def _load_llm_bash_chain(config: dict, **kwargs: Any) -> LLMBashChain:
+def _load_llm_bash_chain(config: dict, **kwargs: Any) -> Any:
+    from langchain_experimental.llm_bash.base import LLMBashChain
+
     llm_chain = None
     if "llm_chain" in config:
         llm_chain_config = config.pop("llm_chain")

libs/langchain/langchain/tools/shell/tool.py

@@ -1,15 +1,14 @@
 import asyncio
 import platform
 import warnings
-from typing import List, Optional, Type, Union
+from typing import Any, List, Optional, Type, Union
 
 from langchain.callbacks.manager import (
     AsyncCallbackManagerForToolRun,
     CallbackManagerForToolRun,
 )
 from langchain.pydantic_v1 import BaseModel, Field, root_validator
 from langchain.tools.base import BaseTool
-from langchain.utilities.bash import BashProcess
 
 
 class ShellInput(BaseModel):
@@ -35,8 +34,16 @@ def _validate_commands(cls, values: dict) -> dict:
         return values
 
 
-def _get_default_bash_processs() -> BashProcess:
-    """Get file path from string."""
+def _get_default_bash_process() -> Any:
+    """Get default bash process."""
+    try:
+        from langchain_experimental.llm_bash.bash import BashProcess
+    except ImportError:
+        raise ImportError(
+            "BashProcess has been moved to langchain experimental."
+            "To use this tool, install langchain-experimental "
+            "with `pip install langchain-experimental`."
+        )
     return BashProcess(return_err_output=True)
 
 
@@ -51,7 +58,7 @@ def _get_platform() -> str:
 class ShellTool(BaseTool):
     """Tool to run shell commands."""
 
-    process: BashProcess = Field(default_factory=_get_default_bash_processs)
+    process: Any = Field(default_factory=_get_default_bash_process)
     """Bash process to run commands."""
 
     name: str = "terminal"

libs/langchain/langchain/utilities/__init__.py

@@ -8,7 +8,6 @@
 from langchain.utilities.arcee import ArceeWrapper
 from langchain.utilities.arxiv import ArxivAPIWrapper
 from langchain.utilities.awslambda import LambdaWrapper
-from langchain.utilities.bash import BashProcess
 from langchain.utilities.bibtex import BibtexparserWrapper
 from langchain.utilities.bing_search import BingSearchAPIWrapper
 from langchain.utilities.brave_search import BraveSearchWrapper
@@ -44,7 +43,6 @@
     "ApifyWrapper",
     "ArceeWrapper",
     "ArxivAPIWrapper",
-    "BashProcess",
     "BibtexparserWrapper",
     "BingSearchAPIWrapper",
     "BraveSearchWrapper",