gam.py 文件源码

def __init__(self, f, fieldnames=None, encoding=UTF8, **kwds):
    self.encoding = encoding
    try:
      self.reader = csv.reader(UTF8Recoder(f, encoding) if self.encoding != UTF8 else f, dialect=csv.excel, **kwds)
      if not fieldnames:
        self.fieldnames = self.reader.next()
        if len(self.fieldnames) > 0 and self.fieldnames[0].startswith(codecs.BOM_UTF8):
          self.fieldnames[0] = self.fieldnames[0].replace(codecs.BOM_UTF8, u'', 1)
      else:
        self.fieldnames = fieldnames
    except (csv.Error, StopIteration):
      self.fieldnames = []
    except LookupError as e:
      Cmd.Backup()
      usageErrorExit(e)
    self.numfields = len(self.fieldnames)