Appending all downloaded parts into one file

What I saw was that the first two files were appended properly, and then there was a very long pause it seemed that the code was stuck in an endless loop. Stepping through your code, the script gathers up the file size of the first file. Then it starts reading an appending data until the file size of your output matches the file size of your input file. Then it moves on to the next file. I also put in some time stuff so I could see how long the code was taking.

It was much improved. Here is the final code. By the way, there is a slight performance boost by opening the file once and closing it once as I suggested in my first reply. I ran the code again and replaced the strftime calls with a simple print time. What I found was that the first version of the code which corrects the bug but still opens and closes the file times runs in 1.

Then I modified the program so that the file is opened only once and closed only once. The resulting program runs in. So by following my first advice you could have saved yourself. Thank you! Note: It depends entirely on what your download contained. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.

Post as a guest Name. Email Required, but never shown. The Overflow Blog. Who owns this outage? Building intelligent escalation chains for modern SRE. Podcast Who is building clouds for the independent developer? Featured on Meta. Now live: A fully responsive profile. Thanks so much — Well done!! In , you need to install it. This is fantastic — is there a way of keeping the data in the new file despite the source data being deleted?

Fantastic article. I need to club 4 files in 1 file as 4 separate sheets. This needs to be done for such files which should become files with 4 tabs each. Is there a quick way to achieve this rather than doing manually for each set of 4 files? Dear Puneet, Thank you for sharing the tutorial. It works well for me, except at one point for which I need your help. However, when data is consolidated from multiple documents it rounds off floating numbers to lower value.

Example: 0. Very nice info. I love it and every step is very easy to follow through. Thank you very much, you make my day brighter. Thank you so much for this awesome tutorial!

Is there a way to merge files if they have a different number of columns though? I have some files that have 2 extra columns at the beginning. I have a TON of files to combine so I want to avoid opening each file to delete those 2 columns or opening the other files to add 2 blank columns if at all possible. Yes, there should be a better way to do for the situation you are telling, let me come back to you.

Brilliant, as always. I am using MS Office for my personal use. But, here's the kicker. To merge files, you can use the following steps:. First of all, extract all the files from the sample folder and save that folder at the desktop or wherever you want to save it. Here you need to locate the folder where you have files. Asked 10 years, 8 months ago. Active 2 months ago. Viewed 65k times. Improve this question.

Martlark Martlark You want to do this with shell commands? Is file IO okay? Possible duplicate of How do I concatenate files in Python? Show 1 more comment. Active Oldest Votes. Just using simple file IO: tempfiles is a list of file handles to your temp files. Improve this answer. Rafe Kettler Rafe Kettler This would only work if each individual file is small enough to be read into memory. You'll probably be better off using shutil.

Add a comment. Order them however you like with open "bigfile. Sumit Naik Sumit Naik 7 7 silver badges 10 10 bronze badges. Use fileinput : with open "bigfile.