We help IT Professionals succeed at work.
Get Started

Python Append to existing csv file

Wm Allen Smith
Last Modified: 2020-03-25
How to append to an existing csv file? I have a csv file that is the result of looping through a folder and extracting data from named excel sheets within the folder. The the dataframe is saved as a csv file. Everytime the process runs it overwrites the content in the csv--I want to append to the file with new rows of data from each run, , not overwrite it. Please advise.
Watch Question
Analyst Assistant
Distinguished Expert 2020
This problem has been solved!
Unlock 2 Answers and 3 Comments.
See Answers
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant

An Experts Exchange subscription includes unlimited access to online courses.

Get Started
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE