将.txt文件从.tar.gz文件复制到其他目录

Question

I am trying to copy all the .txt files from a compressed file (this file has unknown_name_folders): .txt files location ---> my_path/?unknown_name_folder?/file.txt I want to do ---> my_path/file.txt

I did this code, but I have this error: EOFError: Compressed file ended before the end-of-stream marker was reached. Any idea?

file=my_path+"/"+fil
if file.endswith('.tar.gz'):

    tarf = tarfile.open(file, "r:gz")
    for info in tarf:

        if info.name.endswith('.txt'):
            print(info.name)

            tar = tarfile.open(file) #extracting
            tar.extractall()
            tar.close()    
            code=os.system('cp ' + my_path+'/'+info.name +' '+ file)

Answer 1

As Paulo mentioned, you missed off the "gz" flag the second time you opened the tar file. Also, your target for copying the file was the original tarball - I assume you wanted it in a separate directory ("targdir" here)

You only need to extract the contents once, so the code becomes:

file=my_path+"/"+fil
targdir='dest'
if file.endswith('.tar.gz'):

    tarf = tarfile.open(file, "r:gz")
    tarf.extractall()
    for info in tarf:

        if info.name.endswith('.txt'):
            print(info.name)
            code=os.system('cp ' + info.name +' '+ targdir)

(edit - you don't need 'mypath' in the "cp" command - you have extracted the tarball into the current directory, so "info.name! is the full path to the file)