self-reference

I want to get the current script as a string in a variable in Python. I found two sub-optimal ways, but I hope there is a better solution. I found: The inspect import has a getsource method, but that only returns the code of one function (or class or whatever), but not the entire script. I can't find a way to pass the object of the entire script to getsource . I could find the file location of the script file using __file__ or sys.argv[0] and open it to read. But this seems too indirect to me. So: is there a (better) way to access the entire script as a string? If relevant: I'd prefer a Python

Consider the following sscce public enum Flippable A (Z), B (Y), Y (B), Z (A); private final Flippable opposite; private Flippable(Flippable opposite) { this.opposite = opposite; } public Flippable flip() { return opposite; } } This doesn't compile, because Z and Y haven't been declared to be allowed to be arguments of A and B 's constructor. Potential solution 1: Hardcoded Methods public enum Flippable { A { public Flippable flip() { return Z; } }, B { public Flippable flip() { return Y; } }, Y { public Flippable flip() { return B; } }, Z { public Flippable flip() { return A; } }; public

I'm trying to make a self-referential many-to-many relationship (it means that Line can have many parent lines and many child lines) in sqlalchemy like this: Base = declarative_base() class Association(Base): __tablename__ = 'association' prev_id = Column(Integer, ForeignKey('line.id'), primary_key=True) next_id = Column(Integer, ForeignKey('line.id'), primary_key=True) class Line(Base): __tablename__ = 'line' id = Column(Integer, primary_key = True) text = Column(Text) condition = Column(Text) action = Column(Text) next_lines = relationship(Association, backref="prev_lines") class Root(Base):

If I define a function: def f(x): return x+3 I can later store objects as attributes of the function, like so: f.thing="hello!" I would like to do this from inside the code of the function itself. Problem is, how do I get a reference to the function from inside itself? The same way, just use its name. >>> def g(x): ... g.r = 4 ... >>> g <function g at 0x0100AD68> >>> g(3) >>> g.r 4 If you are trying to do memoization, you can use a dictionary as a default parameter: def f(x, memo={}): if x not in memo: memo[x] = x + 3 return memo[x] Or use a closure: def gen_f(): memo = dict() def f(x): try:

I have an entity called Books that can have a list of more books called RelatedBooks. The abbreviated Book entity looks something likes this: public class Book { public virtual long Id { get; private set; } public virtual IList<Book> RelatedBooks { get; set; } } Here is what the mapping looks like for this relationship HasManyToMany(x => x.RelatedBooks) .ParentKeyColumn("BookId") .ChildKeyColumn("RelatedBookId") .Table("RelatedBooks") .Cascade.SaveUpdate(); Here is a sample of the data that is then generated in the RelatedBooks table: BookId RelatedBookId 1 2 1 3 The problem happens when I Try