find a string in all the files within a directory in python

main.py
import os

# Define the directory path and the search string
dir_path = '/path/to/directory'
search_str = 'search_string'

# Traverse through all the files in the directory
for root, dirs, files in os.walk(dir_path):
    for file in files:
        file_path = os.path.join(root, file)
        
        # Open the file and read the content
        with open(file_path, 'r') as f:
            content = f.read()
            
        # Search for the string in the content
        if search_str in content:
            print(f"String found in file: {file_path}")
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