Having problems with reading file in Python CGI

Kiana Toufighi kiana.toufighi at utoronto.ca
Mon Jun 26 20:49:44 CEST 2006


Hi,

I have a simple CGI program that allows that user to upload a file. 
However, since accessing the the value of the uploaded file using the 
value attribute or the getvalue() method reads the entire file in memory 
as a string which is not what I want I'm making use of the file module.  
The problem is that all the my checks including "assert fileStream.file 
in not None" return true however readline() does not return the next 
line of the fileStream.file object!  What am I doing wrong? Here's my code:

Here's my code:

caller:
dataFile = form['data_file']
fileproc = redrev.FileStreamProcessor()
dataLines = fileproc.readStream(dataFile)

callee:
def readStream(self, fileStream):
      '''readStream: reads a stream of input returns a list of lines'''

      # list to hold data lines
      fileLines = []

      # make sure that the stream has been provided
      try:
         assert fileStream.file is not None
      except Exception, e:
         "No input to process"

      # use filestream object to get uploaded file's lines one by one
      if fileStream.file:
         while 1:
            line = fileStream.file.readline()
            if not line:
               break

            # process and store the line
            line.strip()
            fileLines.append(line)

      return fileLines


Thanks,

Kiana



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