Python3.4: cStringIO与StringIO

Question

问题

我返回一个ImportError:没有名为'cStringIO‘的模块。不幸的是，cStringIO已经不复存在，我需要使用StringIO来替代它。我该怎么做呢？

import edgar
import ftplib
from io import StringIO 

ftp = ftplib.FTP(edgar.FTP_ADDR)
ftp.login()
try:
   edgar.download_all(ftp, "/tmp")
except Exception as e:
   print(e)
finally:
   ftp.close()

输出

Traceback (most recent call last):
File "/usr/local/lib/ana/lib/python3.4/site-         packages/edgar/downloader.py", line 5, in <module>
from cStringIO import StringIO
ImportError: No module named 'cStringIO'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/aranjohn/PycharmProjects/edgar/secEd.py", line 1, in     <module>
import edgar
File "/usr/local/lib/ana/lib/python3.4/site-  packages/edgar/__init__.py", line 1, in <module>
from .downloader import FTP_ADDR, file_list, download, download_all
File "/usr/local/lib/ana/lib/python3.4/site-  packages/edgar/downloader.py", line 7, in <module>
from StringIO import StringIO
ImportError: No module named 'StringIO'

Process finished with exit code 1

Answer 1

StringIO在3.x中不再存在。对于文本使用io.StringIO，对于字节使用io.BytesIO。