As I already mentioned the parser from the Python interpreter shared library strips the comments. Certainly, the interpreter does not need them however it is critical not to loose them when a flowchart diagram is generated. Therefore a second pass over the input buffer was required to collect comments.
Luckily Python has a very simple grammar: there are no multi line
comments and there is no pre-processor. The only thing which needs an attention is
# character is within a string literal or not. The comments
are collected as a list of fragments. Each fragment describes a single line and holds
the line number, the start and the end positions in the line as well as their absolute