Python文件写到本地

import os
ls=os.linesep

while True:
    fname=input("fname>>>")
    if os.path.exists(fname):
        print('ERROR %s is exist '% fname)
        continue
    else:
        pass
    break

all=[]
print("\n Enter")

while True:
    entry =input(">")
    if entry=='.':
        
        break
    else:
        all.append(entry)

fobj=open(fname,'w')
fobj.writelines(['%s%s'%(x,ls) for x in all])
fobj.close()
print('END')