It means it’s a decimal literal, as others have said. However, the origins are probably not those suggested elsewhere in this answer. From the C# Annotated Standard (the ECMA version, not the MS version): The decimal suffix is M/m since D/d was already taken by double. Although it has been suggested that M stands for … Read more
I would all but guarantee that the issue is some sort of non-printing character that’s present in the value you pulled off your socket. It looks like you’re using Python 2.x, in which case you can check for them with this: You’ll likely see something in there that’s escaped in the form \x00. These non-printing characters … Read more
This line is your problem: Python interprets what’s in those square brackets as a key to get an item from what’s just before them—in this case, getting the item with key “ram”, “bak”, … from list. And, of course, the list class isn’t a container and doesn’t have any items! Remove the leading list, and … Read more
No, there’s no literal syntax for the empty set. You have to write set().
For reference—future Python possibilities:Starting with Python 2.6 you can express binary literals using the prefix 0b or 0B: You can also use the new bin function to get the binary representation of a number: Development version of the documentation: What’s New in Python 2.6