# 29.4 `modulefinder` -- Find modules used by a script

New in version 2.3.

This module provides a `ModuleFinder` class that can be used to determine the set of modules imported by a script. `modulefinder.py` can also be run as a script, giving the filename of a Python script as its argument, after which a report of the imported modules will be printed.

`AddPackagePath`( | pkg_name, path)

  Record that the package named pkg_name can be found in the specified path.

`ReplacePackage`( | oldname, newname)

  Allows specifying that the module named oldname is in fact the package named newname. The most common usage would be to handle how the `_xmlplus` package replaces the `xml` package.

class `ModuleFinder`( | [path=None, debug=0, excludes=[], replace_paths=[]])

  This class provides `run_script()` and `report()` methods to determine the set of modules imported by a script. path can be a list of directories to search for modules; if not specified, `sys.path` is used. debug sets the debugging level; higher values make the class print debugging messages about what it's doing. excludes is a list of module names to exclude from the analysis. replace_paths is a list of `(oldpath, newpath)` tuples that will be replaced in module paths.

`report`( | )

  Print a report to standard output that lists the modules imported by the script and their paths, as well as modules that are missing or seem to be missing.

`run_script`( | pathname)

  Analyze the contents of the pathname file, which must contain Python code.