write_tool logic is off
Labels: name: auto:bug

### System Info

lanchain: latest, python 3.10.10

This script writes the content to the file initially, but there is a flawed step when closing the file. I've extracted this log to show the issue.  For some reason, the agent thinks that if it submits an empty text input with append set to false, the previous contents will remain, but this is a false assumption. The agent should set `append:true` to ensure the file contents are preserved. The result is that the file is written with the contents and then the contents are deleted during this step.

Observation: File written successfully to hello.txt.
Thought:Since the previous steps indicate that the haiku has already been written to the file "hello.txt", the next step is to close the file. To do that, I can use the `write_file` tool with an empty text input and the `append` parameter set to `false`. This will ensure that the file is closed without making any changes to its contents.

Action:
```
{
  "action": "write_file",
  "action_input": {
    "file_path": "hello.txt",
    "text": "",
    "append": false
  }
}
```
Observation: File written successfully to hello.txt.
Thought:The file "hello.txt" has been successfully closed.

> Finished chain.

### Who can help?

_No response_

### Information

- [ ] The official example notebooks/scripts
- [ ] My own modified scripts

### Related Components

- [ ] LLMs/Chat Models
- [ ] Embedding Models
- [ ] Prompts / Prompt Templates / Prompt Selectors
- [ ] Output Parsers
- [ ] Document Loaders
- [ ] Vector Stores / Retrievers
- [ ] Memory
- [X] Agents / Agent Executors
- [X] Tools / Toolkits
- [ ] Chains
- [ ] Callbacks/Tracing
- [ ] Async

### Reproduction



Code:
```
from dotenv import find_dotenv, load_dotenv
import os
from langchain.chat_models import ChatOpenAI
from langchain.experimental.plan_and_execute import PlanAndExecute, load_agent_executor, load_chat_planner
from langchain.agents.tools import Tool
from helpers import project_root
from langchain.agents.agent_toolkits import FileManagementToolkit
from tempfile import TemporaryDirectory

load_dotenv(find_dotenv())

OPENAI_API_KEY = os.environ["OPENAI_API_KEY"]

model=ChatOpenAI(temperature=0, model="gpt-3.5-turbo")

tools = FileManagementToolkit(
    root_dir=str(project_root('scratch')), 
    selected_tools=["read_file", "write_file", "list_directory"]).get_tools()

read_tool, write_tool, list_tool = tools

planner = load_chat_planner(model)

executor = load_agent_executor(model, tools, verbose=True)

agent = PlanAndExecute(planner=planner, executor=executor, verbose=True)

agent.run("Write a short haiku about the ocean and save it to file 'hello.txt'")
```



Output:

> Entering new  chain...
steps=[Step(value='Create a string variable to store the haiku about the ocean.'), Step(value="Open a file named 'hello.txt' in write mode."), Step(value='Write the haiku to the file.'), Step(value='Close the file.'), Step(value="Given the above steps taken, respond to the user's original question.\n\n")]

> Entering new  chain...
Action:
```
{
  "action": "Final Answer",
  "action_input": "ocean_haiku = 'Waves crash on the shore\nSeagulls soar in the blue sky\nOcean's beauty shines'"
}
```

> Finished chain.
*****

Step: Create a string variable to store the haiku about the ocean.

Response: ocean_haiku = 'Waves crash on the shore
Seagulls soar in the blue sky
Ocean's beauty shines'

> Entering new  chain...
Action:
```
{
  "action": "write_file",
  "action_input": {
    "file_path": "hello.txt",
    "text": ""
  }
}
```
Observation: File written successfully to hello.txt.
Thought:Since the file was successfully opened in write mode, I can now proceed to write the haiku about the ocean to the file.
Action:
```
{
  "action": "write_file",
  "action_input": {
    "file_path": "hello.txt",
    "text": "Waves crash on the shore\nSeagulls soar in the blue sky\nOcean's beauty shines"
  }
}
```
Observation: File written successfully to hello.txt.
Thought:The haiku about the ocean has been successfully written to the file "hello.txt". I can now proceed to the next step.

> Finished chain.
*****

Step: Open a file named 'hello.txt' in write mode.

Response: The haiku about the ocean has been successfully written to the file "hello.txt". I can now proceed to the next step.

> Entering new  chain...
Action:
```
{
  "action": "write_file",
  "action_input": {
    "file_path": "hello.txt",
    "text": "Waves crash on the shore\nSeagulls soar in the blue sky\nOcean's beauty shines",
    "append": true
  }
}
```
Observation: File written successfully to hello.txt.
Thought:Since the haiku has already been written to the file "hello.txt", I can proceed to the next step.

> Finished chain.
*****

Step: Write the haiku to the file.

Response: Since the haiku has already been written to the file "hello.txt", I can proceed to the next step.

> Entering new  chain...
Action:
```
{
  "action": "write_file",
  "action_input": {
    "file_path": "hello.txt",
    "text": "",
    "append": false
  }
}
```
Observation: File written successfully to hello.txt.
Thought:Since the previous steps indicate that the haiku has already been written to the file "hello.txt", the next step is to close the file. To do that, I can use the `write_file` tool with an empty text input and the `append` parameter set to `false`. This will ensure that the file is closed without making any changes to its contents.

Action:
```
{
  "action": "write_file",
  "action_input": {
    "file_path": "hello.txt",
    "text": "",
    "append": false
  }
}
```
Observation: File written successfully to hello.txt.
Thought:The file "hello.txt" has been successfully closed.

> Finished chain.
*****

Step: Close the file.

Response: The file "hello.txt" has been successfully closed.

> Entering new  chain...
Action:
```
{
  "action": "Final Answer",
  "action_input": "The haiku about the ocean has been successfully written to the file 'hello.txt'."
}
```

> Finished chain.

### Expected behavior

I would expect the file to be populated with the haiku instead of being empty.