ComfyUI Node: String Get Line

String Get Line:

The JWStringGetLine node is designed to extract a specific line from a given string. This node is particularly useful when working with multi-line text data, allowing you to easily retrieve and manipulate individual lines based on their index. By specifying the line index, you can quickly access the desired line without manually parsing the entire text. This functionality is beneficial for tasks that involve processing structured text data, such as logs, scripts, or formatted documents, where each line may contain distinct and relevant information.

String Get Line Input Parameters:

source

The source parameter is the input string from which a specific line will be extracted. This string can contain multiple lines separated by newline characters. The content of this parameter directly impacts the output, as it determines the pool of lines from which the specified line will be retrieved. The default value is an empty string ("").

line_index

The line_index parameter specifies the index of the line to be extracted from the source string. This is an integer value where the first line is indexed at 0. If the specified index is out of range (i.e., there are fewer lines in the source than the index value), an error may occur. The default value is 0.

String Get Line Output Parameters:

line

The line output parameter is the extracted line from the source string based on the specified line_index. This output is a single string representing the content of the line at the given index. If the index is valid, this parameter will contain the exact text of the specified line.

String Get Line Usage Tips:

• Ensure that the source string contains newline characters (\n) to properly separate lines for extraction.
• Use the line_index parameter to target specific lines, starting from 0 for the first line.
• Combine this node with other string manipulation nodes to further process the extracted line, such as trimming whitespace or replacing specific characters.

String Get Line Common Errors and Solutions:

IndexError: list index out of range

• Explanation: This error occurs when the specified line_index is greater than the number of lines in the source string.
• Solution: Verify that the line_index is within the range of available lines in the source string. Adjust the index value accordingly to ensure it falls within the valid range.

ValueError: invalid literal for int() with base 10

• Explanation: This error may occur if the line_index parameter is not provided as an integer.
• Solution: Ensure that the line_index is specified as an integer value. If using a variable, confirm that it is correctly converted to an integer before passing it to the node.