code: def initpkg(pkgname, exportdefs, attr=None, eager=False):
      """initialize given package from the export definitions."""
      attr = attr or {}
      oldmod = sys.modules.get(pkgname)
      d = {}
      f = getattr(oldmod, "__file__", None)
      if f:
          f = _py_abspath(f)
      d["__file__"] = f
      if hasattr(oldmod, "__version__"):
          d["__version__"] = oldmod.__version__
      if hasattr(oldmod, "__loader__"):
          d["__loader__"] = oldmod.__loader__
      if hasattr(oldmod, "__path__"):
          d["__path__"] = [_py_abspath(p) for p in oldmod.__path__]
      if hasattr(oldmod, "__package__"):
          d["__package__"] = oldmod.__package__
      if "__doc__" not in exportdefs and getattr(
          oldmod, "__doc__", None
      ):
          d["__doc__"] = oldmod.__doc__
      d["__spec__"] = getattr(oldmod, "__spec__", None)
      d.update(attr)
      if hasattr(oldmod, "__dict__"):
          oldmod.__dict__.update(d)
      mod = ApiModule(pkgname, exportdefs, implprefix=pkgname, attr=d)
      sys.modules[pkgname] = mod
      # eagerload in bypthon to avoid their monkeypatching breaking packages
      if "bpython" in sys.modules or eager:
          for module in list(sys.modules.values()):
              if isinstance(module, ApiModule):
                  module.__dict__
      return mod
  
file_path: catboost/contrib/python/py/py2/py/_vendored_packages/apipkg/__init__.py
imports: import os
  import sys
  from types import ModuleType
  from .version import version
label_desc: Use image node_id 3 for calling a global function with example usage: initpkg(pkgname, exportdefs, attr, eager) and returns: mod