python - Printing items within a list within a list, etc. (Printing nested lists) -

i'm trying write function print:

file1  file2  file3  file4  file5  file6  file7 

when enter:

c = [['file1', [['file2']], ['file3', 'file4', 'file5']], 'file6', ['file7']] 

it's supposed directory.

here code:

def tree_traverse(directory) :      list1 = list(directory)     in list1 :         if == 'cc' :             del(list1[:(list1[it]+3)])     item in directory :         print(item) 

whenever enter input above, error saying c unexpected argument. also, when enter above input without "c = ", prints entered it. i'm quite lost @ do.

this flattens list want.

c = [['file1', [['file2']], ['file3', 'file4', 'file5']], 'file6', ['file7']]  def getfiles(container):     f in container:         if isinstance(f, list):             farray in getfiles(f):                 yield farray         else:             yield f  print "".join("%s\n" %f f in list(getfiles(c)))