TypeError: object of type 'filter' has no len()

[AngelTs]

Traceback (most recent call last):
File "c:$ABC$\pywallet.py", line 3785, in
recoveredKeys=recov(device, passes, size, 10240, options.recov_outputdir)
File "c:$ABC$\pywallet.py", line 1847, in recov
if len(ckeys_not_decrypted)==0:
TypeError: object of type 'filter' has no len()

[AngelTs]

I found the error:
Replace original line (#1846) of pywallet.py

ckeys_not_decrypted=filter(lambda x:x[1].privkey==None, ckeys)

WITH

ckeys_not_decrypted=list(filter(lambda x:x[1].privkey==None, ckeys))

[masievtec]

I found the error: Replace original line (#1846) of pywallet.py

ckeys_not_decrypted=filter(lambda x:x[1].privkey==None, ckeys)

WITH

ckeys_not_decrypted=list(filter(lambda x:x[1].privkey==None, ckeys))

After changing I have an error:

Traceback (most recent call last):
File "pywallet.py", line 2551, in update_wallet
kds.write_string(d['hash'])
File "pywallet.py", line 2167, in write_string
self.write(string)
File "pywallet.py", line 2136, in write
self.input += bytes
TypeError: can't concat str to bytes
Traceback (most recent call last):
File "pywallet.py", line 4072, in
importprivkey(db, sec+'01', "recovered: %s"%sec, None, False)
TypeError: can't concat str to bytes