使用 pandas 读取 zip 文件

Question

I am currently trying to read a csv file that I compressed into a zip file (this zip file only contains my csv). I tried to simply write pd.read_csv("trigramme_matrix.zip") (as suggested in the documentation) but this returns NotImplementedError: compression type 9 (deflate64) . I then tried to solve my problem using the zipfile module with z = zipfile.ZipFile("trigramme_matrix.zip", "r") and then pd.read_csv(z.read("trigramme_matrix.csv")) but it keeps throwing the same error.

I searched if I could get any insight on this error but the infos I got didn't help me much...

I thank you by advance.

Answer 1

I assume you are using Windows like I am, please let me know if that is not the case. Unzipping a type 9 Zip file is easy in Windows XP and higher because they have inbuilt support for Zip files. I assume you are doing it before running the python code. If you want to do this at runtime, the old post which we came across has code to unzip at runtime using the software 7Zip.

Step 1: Extracting the csv from the type 9 Zip file

Windows Explorer will open the Zip file like any normal folder. Have to copy the csv file in the zip file and paste it inside desired folder.

Step 2: We can use Windows Explorer to zip the csv again, this time to a normal zip (Not type 9), which is the default used by Windows Explorer

Step 3: If you want to use the command line for some reason, one way is to get some unzip software which works with the command line, for example http://stahlworks.com/dev/unzip.exe

Please make sure you scan it using your antivirus