# Find the largest Python source file on the module import search path

import sys, os, pprint
visited  = {}
allsizes = []
for srcdir in sys.path:
    for (thisDir, subsHere, filesHere) in os.walk(srcdir):
        thisDir = os.path.normpath(thisDir)
        if thisDir.upper() in visited:
            continue
        else:
            visited[thisDir.upper()] = True
        for filename in filesHere:
            if filename.endswith('.py'):
                pypath  = os.path.join(thisDir, filename)
                try:
                    pysize = os.path.getsize(pypath)
                except:
                    print('skipping', pypath)
                allsizes.append((pysize, pypath))

allsizes.sort()
pprint.pprint(allsizes[:3])
pprint.pprint(allsizes[-3:])