蟒蛇CSV unicode的例子

Question

我从python web site复制此脚本：

import sqlite3 
import csv 
import codecs 
import cStringIO 
import sys 

class UTF8Recoder: 
    """ 
    Iterator that reads an encoded stream and reencodes the input to UTF-8 
    """ 
    def __init__(self, f, encoding): 
     self.reader = codecs.getreader(encoding)(f) 

    def __iter__(self): 
     return self 

    def next(self): 
     return self.reader.next().encode("utf-8") 

class UnicodeReader: 
    """ 
    A CSV reader which will iterate over lines in the CSV file "f", 
    which is encoded in the given encoding. 
    """ 

    def __init__(self, f, dialect=csv.excel, encoding="utf-8", **kwds): 
     f = UTF8Recoder(f, encoding) 
     self.reader = csv.reader(f, dialect=dialect, **kwds) 

    def next(self): 
     row = self.reader.next() 
     return [unicode(s, "utf-8") for s in row] 

    def __iter__(self): 
     return self 

class UnicodeWriter: 
    """ 
    A CSV writer which will write rows to CSV file "f", 
    which is encoded in the given encoding. 
    """ 

    def __init__(self, f, dialect=csv.excel, encoding="utf-8", **kwds): 
     # Redirect output to a queue 
     self.queue = cStringIO.StringIO() 
     self.writer = csv.writer(self.queue, dialect=dialect, **kwds) 
     self.stream = f 
     self.encoder = codecs.getincrementalencoder(encoding)() 

    def writerow(self, row): 
     self.writer.writerow([s.encode("utf-8") for s in row]) 
     # Fetch UTF-8 output from the queue ... 
     data = self.queue.getvalue() 
     data = data.decode("utf-8") 
     # ... and reencode it into the target encoding 
     data = self.encoder.encode(data) 
     # write to the target stream 
     self.stream.write(data) 
     # empty queue 
     self.queue.truncate(0) 

    def writerows(self, rows): 
     for row in rows: 
      self.writerow(row) 

当我运行该脚本，我得到这个错误：

Traceback (most recent call last): 
    File "makeCSV.py", line 20, in <module> 
    class UnicodeReader: 
    File "makeCSV.py", line 26, in UnicodeReader 
    def __init__(self, f, dialect=csv.excel, encoding="utf-8", **kwds): 
AttributeError: 'module' object has no attribute 'excel' 

什么可以原因的错误，以及如何能我修复它？

Answer 1

这个模块，csv，我不认为这是你的想法。检查导入的路径中是否没有任何csv.py，而不是stdlib csv模块。

您可以打印出csv.__file__（从脚本中）以查看它来自哪里。然后，删除/移动有问题的文件，以便导入stdlib csv。

Answer 2

也许问题是愚蠢的，但我认为它值得回答它，而不是删除它。我已经在带有问题脚本的工作目录上创建了csv.py脚本，因此我首先理解python解释器尝试从当前工作目录中导入库，然后从python文件路径导入库，这是问题所在。