<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def find_linux_venv_py_version():
 """Find python version name used in this virtualenv. For example: ``python2.7``, ``python3.4`` """

    available_python_version = [
        "python2.6",
        "python2.7",
        "python3.3",
        "python3.4",
        "python3.5",
        "python3.6",
    ]
    dir_path = os.path.dirname(SRC)
    for basename in os.listdir(os.path.join(dir_path, BIN_SCRIPTS)):
        for python_version in available_python_version:
            if python_version in basename:
                return python_version
    raise Exception("Can't find virtualenv python version!")