31.6. modulefinder — 查找脚本使用的模块

2.3 新版功能.

源码: Lib/modulefinder.py


该模块提供了一个 ModuleFinder 类,可用于确定脚本导入的模块集。 modulefinder.py 也可以作为脚本运行,给出 Python 脚本的文件名作为参数,之后将打印导入模块的报告。

modulefinder.AddPackagePath(pkg_name, path)

记录名为 pkg_name 的包可以在指定的 path 中找到。

modulefinder.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.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()

将报告打印到标准输出,列出脚本导入的模块及其路径,以及缺少或似乎缺失的模块。

run_script(pathname)

分析 pathname 文件的内容,该文件必须包含 Python 代码。

modules

一个将模块名称映射到模块的字典。 请参阅 ModuleFinder 的示例用法

31.6.1. ModuleFinder 的示例用法

稍后将分析的脚本(bacon.py):

import re, itertools

try:
    import baconhameggs
except ImportError:
    pass

try:
    import guido.python.ham
except ImportError:
    pass

将输出 bacon.py 报告的脚本:

from modulefinder import ModuleFinder

finder = ModuleFinder()
finder.run_script('bacon.py')

print 'Loaded modules:'
for name, mod in finder.modules.iteritems():
    print '%s: ' % name,
    print ','.join(mod.globalnames.keys()[:3])

print '-'*50
print 'Modules not imported:'
print '\n'.join(finder.badmodules.iterkeys())

输出样例(可能因架构而异):

Loaded modules:
_types:
copy_reg:  _inverted_registry,_slotnames,__all__
sre_compile:  isstring,_sre,_optimize_unicode
_sre:
sre_constants:  REPEAT_ONE,makedict,AT_END_LINE
sys:
re:  __module__,finditer,_expand
itertools:
__main__:  re,itertools,baconhameggs
sre_parse:  __getslice__,_PATTERNENDERS,SRE_FLAG_UNICODE
array:
types:  __module__,IntType,TypeType
---------------------------------------------------
Modules not imported:
guido.python.ham
baconhameggs