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Creates required directories for the application if they don't already exist, specifically DOCUMENTS_DIR and CHAT_SESSIONS_DIR.

Purpose

This function ensures that essential directories needed for the application's operation are present in the filesystem. It's typically called during application initialization to prevent file I/O errors when the application attempts to read from or write to these directories. The function uses os.makedirs with exist_ok=True to safely create directories without raising errors if they already exist.

Source Code

def ensure_directories():
    """Ensure required directories exist"""
    for dir_path in [DOCUMENTS_DIR, CHAT_SESSIONS_DIR]:
        os.makedirs(dir_path, exist_ok=True)

Return Value

This function returns None. It performs a side effect of creating directories on the filesystem but does not return any value.

Dependencies

• os

Required Imports

import os

Usage Example

import os

# Define required directory paths
DOCUMENTS_DIR = './data/documents'
CHAT_SESSIONS_DIR = './data/chat_sessions'

def ensure_directories():
    """Ensure required directories exist"""
    for dir_path in [DOCUMENTS_DIR, CHAT_SESSIONS_DIR]:
        os.makedirs(dir_path, exist_ok=True)

# Call during application initialization
if __name__ == '__main__':
    ensure_directories()
    print('Required directories have been created or verified')

Best Practices

• Call this function early in the application lifecycle, preferably during initialization or startup
• Ensure DOCUMENTS_DIR and CHAT_SESSIONS_DIR constants are defined before calling this function
• The function uses exist_ok=True which makes it safe to call multiple times without errors
• Verify that the application has appropriate filesystem permissions before calling
• Consider adding error handling around this function call to catch permission errors or invalid path errors
• This function should be called before any file operations that depend on these directories
• Consider logging the directory creation for debugging purposes in production environments

Tags

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