Question

I’ve got a csv file and whenever i access the elements it gets me

aapl,2001-12-4,,,,,

The commas at the end is causing my functions to not work properly for my other application. How can I remove this in order to get rid of any additional commas after elements?

for example the above after correction would be

aaple,2001-12-4

anything will help, thanks so much.

m

Answer 1

Here’s how to remove the excess commas from the right hand side of a string:

In [2]: mystring = '1,2,3,4,"Hello!",,,,,,,,,'

In [3]: mystring.rstrip(',')
Out[3]: '1,2,3,4,"Hello!"'

In [4]: 

Expand on this to perform the comma-stripping operation for each line of a file:

• Open the original .csv file.
• Process one line, removing excess commas.
• Write the processed line to a new file.
• Repeat until your original .csv file is completely processed.