{{{#!python
import os,sys
datadir='Desktop/'
files=os.listdir(datadir)
size=0
for file in files:
   size +=os.path.getsize(datadir+file)
print size
}}}

{{{#!python
import os,glob
directory='satbildverarbeitung2' #Hier gewünschtes Verzeichnis angeben
files=glob.glob('directory/*.*')
for i in files:
    size=os.path.getsize(i)
    print i,size
}}}