How to list imported modules

Question

How to enumerate all imported modules   E g  I would like to get   os    sys   from this code   import os import sys

User · Answer

If you want to do this from outside the script:

Python 2

from modulefinder import ModuleFinder
finder = ModuleFinder()
finder.run_script("myscript.py")
for name, mod in finder.modules.iteritems():
    print name

Python 3

from modulefinder import ModuleFinder
finder = ModuleFinder()
finder.run_script("myscript.py")
for name, mod in finder.modules.items():
    print(name)

This will print all modules loaded by myscript.py.

User · Answer

Find the intersection of sys modules with globals   import sys modulenames   set sys modules   amp  set globals    allmodules    sys modules name  for name in modulenames

User · Answer

print  key for key in locals   keys          if isinstance locals   key   type sys   and not key startswith

User · Answer

I like using a list comprehension in this case    gt  gt  gt   w for w in dir   if w     datetime  or w     sqlite3     datetime    sqlite3      To count modules of interest     gt  gt  gt  count    w for w in dir   if w     datetime  or w     sqlite3    gt  gt  gt  len count  2    To count all installed modules     gt  gt  gt  count   dir    gt  gt  gt  len count

User · Answer

This code lists modules imported by your module   import sys before    str m  for m in sys modules  import my module after    str m  for m in sys modules  print  m for m in after if not m in before    It should be useful if you want to know what external modules to install on a new system to run your code  without the need to try again and again   It won t list the sys module or modules imported from it

User · Answer

import sys sys modules keys     An approximation of getting all imports for the current module only would be to inspect globals   for modules   import types def imports        for name  val in globals   items            if isinstance val  types ModuleType               yield val   name     This won t return local imports  or non-module imports like from x import y   Note that this returns val   name   so you get the original module name if you used import module as alias  yield name instead if you want the alias

User · Answer

let say you ve imported math and re    gt  gt import math re   now to see the same use    gt  gt print dir      If you run it before the import and after the import  one can see the difference

User · Answer

Stealing from  Lila  couldn t make a comment because of no formatting   this shows the module s  path   as well       usr bin env python import sys from modulefinder import ModuleFinder finder   ModuleFinder     Pass the name of the python file of interest finder run script sys argv 1     This is what s different from  Lila s script finder report     which produces   Name                      File ----                      ----      m token                      opt rh rh-python35 root usr lib64 python3 5 token py m tokenize                   opt rh rh-python35 root usr lib64 python3 5 tokenize py m traceback                  opt rh rh-python35 root usr lib64 python3 5 traceback py          suitable for grepping or what have you  Be warned  it s long

User · Answer

It s actually working quite good with   import sys mods    m   name   for m in sys modules values   if m    This will create a list with importable module names

[python] How to list imported modules?

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