<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def create_package(self, dirpath):
 """Set up a package directory."""

        dirpath = fixpath(dirpath)
        filepath = os.path.join(dirpath, "__coconut__.py")
        with openfile(filepath, "w") as opened:
            writefile(opened, self.comp.getheader("__coconut__"))