What does a syntax error signify in Python?

A syntax error in Python signifies that there is an issue with the code's structure that prevents it from being understood or executed by the interpreter. Such errors occur when the code does not conform to the rules of the Python programming language, which includes correct usage of keywords, proper indentation, valid operators, and appropriate punctuation.

For example, forgetting to close a parenthesis, using incorrect indentation levels, or misspelling a keyword can all lead to syntax errors. These issues must be fixed before the Python interpreter can run the code successfully, as it relies on a specific syntax to parse and understand the code's intended operations.

In contrast, runtime issues arise when the code is executed but encounters problems during execution, logical flaws pertain to errors in the algorithm or logic that produce incorrect results without causing a syntax error, and memory allocation problems are related to how memory is managed during execution and are not classified as syntax errors.