def search_text(file, text, new_text): f = open(file, 'r', newline='\n') content = f.read() print(text, content.find(new_text)) content = content.replace(text, new_text) f.close() with open(file, 'w', newline='\n') as f: f.write(content) file = './app/plugins/02-connection.js' text1 = 'mode = "dev"' newtext1 = 'mode = "prod"' search_text(file, text1, newtext1) file = './app/stores/index.js' search_text(file,'defineStore("erp-dev"','defineStore("erp"')