import csv
import itertools


def grouper(iterable, n):
    """
    Slice up `iterable` into iterables of `n` items.

    :param iterable: Iterable to splice.
    :param n: Number of items per slice.
    :returns: iterable of iterables
    """
    it = iter(iterable)
    while True:
        chunk = itertools.islice(it, n)
        try:
            first = next(chunk)
        except StopIteration:
            return

        yield itertools.chain([first], chunk)


class UnicodeCSVReader(object):
    """
    An extremely minimal wrapper around csv.reader to assist in
    reading Unicode data.
    """
    def __init__(self, *args, **kwargs):
        self.encoding = kwargs.pop('encoding', 'utf8')
        self.pad_to = kwargs.pop('pad_to', 0)
        self.pad_with = kwargs.pop('pad_with', '')
        self.reader = csv.reader(*args, **kwargs)

    def next(self):
        row = self.reader.next()
        padding = [self.pad_with] * (self.pad_to - len(row))
        return [unicode(c, self.encoding) for c in row] + padding

    def __iter__(self):
        return self

    @property
    def dialect(self):
        return self.reader.dialect

    @property
    def line_num(self):
        return self.reader.line_num

import csv
import itertools


def grouper(iterable, n):
    """
    Slice up `iterable` into iterables of `n` items.

    :param iterable: Iterable to splice.
    :param n: Number of items per slice.
    :returns: iterable of iterables
    """
    it = iter(iterable)
    while True:
        chunk = itertools.islice(it, n)
        try:
            first = next(chunk)
        except StopIteration:
            return

        yield itertools.chain([first], chunk)


class UnicodeCSVReader(object):
    """
    An extremely minimal wrapper around csv.reader to assist in
    reading Unicode data.
    """
    def __init__(self, *args, **kwargs):
        self.encoding = kwargs.pop('encoding', 'utf8')
        self.pad_to = kwargs.pop('pad_to', 0)
        self.pad_with = kwargs.pop('pad_with', '')
        self.reader = csv.reader(*args, **kwargs)

    def next(self):
        row = self.reader.next()
        padding = [self.pad_with] * (self.pad_to - len(row))
        return [unicode(c, self.encoding) for c in row] + padding

    def __iter__(self):
        return self

    @property
    def dialect(self):
        return self.reader.dialect

    @property
    def line_num(self):
        return self.reader.line_num


class UnicodeCSVWriter(object):
    def __init__(self, *args, **kwargs):
        self.encoding = kwargs.pop('encoding', 'utf8')
        self.writer = csv.writer(*args, **kwargs)

    def writerow(self, row):
        self.writer.writerow([
            column.encode(self.encoding) for column in row
        ])

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

Add a simple UnicodeCSVWriter, probably flawed.
Add a simple UnicodeCSVWriter, probably flawed.

  import csv
  import itertools
  
  
  def grouper(iterable, n):
      """
      Slice up `iterable` into iterables of `n` items.
  
      :param iterable: Iterable to splice.
      :param n: Number of items per slice.
      :returns: iterable of iterables
      """
      it = iter(iterable)
      while True:
          chunk = itertools.islice(it, n)
          try:
              first = next(chunk)
          except StopIteration:
              return
  
          yield itertools.chain([first], chunk)
  
  
  class UnicodeCSVReader(object):
      """
      An extremely minimal wrapper around csv.reader to assist in
      reading Unicode data.
      """
      def __init__(self, *args, **kwargs):
          self.encoding = kwargs.pop('encoding', 'utf8')
          self.pad_to = kwargs.pop('pad_to', 0)
          self.pad_with = kwargs.pop('pad_with', '')
          self.reader = csv.reader(*args, **kwargs)
  
      def next(self):
          row = self.reader.next()
          padding = [self.pad_with] * (self.pad_to - len(row))
          return [unicode(c, self.encoding) for c in row] + padding
  
      def __iter__(self):
          return self
  
      @property
      def dialect(self):
          return self.reader.dialect
  
      @property
      def line_num(self):
          return self.reader.line_num
  
+ 
+ class UnicodeCSVWriter(object):
+     def __init__(self, *args, **kwargs):
+         self.encoding = kwargs.pop('encoding', 'utf8')
+         self.writer = csv.writer(*args, **kwargs)
+ 
+     def writerow(self, row):
+         self.writer.writerow([
+             column.encode(self.encoding) for column in row
+         ])
+ 
+     def writerows(self, rows):
+         for row in rows:
+             self.writerow(row)
+ 
Add a simple UnicodeCSVWriter, probably flawed.
## Code Before:
import csv
import itertools


def grouper(iterable, n):
    """
    Slice up `iterable` into iterables of `n` items.

    :param iterable: Iterable to splice.
    :param n: Number of items per slice.
    :returns: iterable of iterables
    """
    it = iter(iterable)
    while True:
        chunk = itertools.islice(it, n)
        try:
            first = next(chunk)
        except StopIteration:
            return

        yield itertools.chain([first], chunk)


class UnicodeCSVReader(object):
    """
    An extremely minimal wrapper around csv.reader to assist in
    reading Unicode data.
    """
    def __init__(self, *args, **kwargs):
        self.encoding = kwargs.pop('encoding', 'utf8')
        self.pad_to = kwargs.pop('pad_to', 0)
        self.pad_with = kwargs.pop('pad_with', '')
        self.reader = csv.reader(*args, **kwargs)

    def next(self):
        row = self.reader.next()
        padding = [self.pad_with] * (self.pad_to - len(row))
        return [unicode(c, self.encoding) for c in row] + padding

    def __iter__(self):
        return self

    @property
    def dialect(self):
        return self.reader.dialect

    @property
    def line_num(self):
        return self.reader.line_num

## Instruction:
Add a simple UnicodeCSVWriter, probably flawed.
## Code After:
import csv
import itertools


def grouper(iterable, n):
    """
    Slice up `iterable` into iterables of `n` items.

    :param iterable: Iterable to splice.
    :param n: Number of items per slice.
    :returns: iterable of iterables
    """
    it = iter(iterable)
    while True:
        chunk = itertools.islice(it, n)
        try:
            first = next(chunk)
        except StopIteration:
            return

        yield itertools.chain([first], chunk)


class UnicodeCSVReader(object):
    """
    An extremely minimal wrapper around csv.reader to assist in
    reading Unicode data.
    """
    def __init__(self, *args, **kwargs):
        self.encoding = kwargs.pop('encoding', 'utf8')
        self.pad_to = kwargs.pop('pad_to', 0)
        self.pad_with = kwargs.pop('pad_with', '')
        self.reader = csv.reader(*args, **kwargs)

    def next(self):
        row = self.reader.next()
        padding = [self.pad_with] * (self.pad_to - len(row))
        return [unicode(c, self.encoding) for c in row] + padding

    def __iter__(self):
        return self

    @property
    def dialect(self):
        return self.reader.dialect

    @property
    def line_num(self):
        return self.reader.line_num


class UnicodeCSVWriter(object):
    def __init__(self, *args, **kwargs):
        self.encoding = kwargs.pop('encoding', 'utf8')
        self.writer = csv.writer(*args, **kwargs)

    def writerow(self, row):
        self.writer.writerow([
            column.encode(self.encoding) for column in row
        ])

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