I'm using CocoTB to test my HDL design, but as I understand, it's possible to use it with python2.7 or python3.

In setup.py config file I can see that both are supported :

```
    [...]
    "Programming Language :: Python :: 2.7",
    "Programming Language :: Python :: 3",
    [...]

```

In endian\_swapper test (examples/endian\_swapper/tests/test\_endian\_swapper.py), if I modify a test script to see which version is used :

```
@cocotb.test()
def wavedrom_test(dut):
    """
    Generate a JSON wavedrom diagram of a trace and save it to wavedrom.json
    """
    print("Python version used {}".format(sys.version_info))

```

I can see that python2.7 is used when I launch test with «make» command :

```
Python version used sys.version_info(major=2, minor=7, micro=9, releaselevel='final', serial=0)

```

My python3 executable is named ... python3 in fact (debian). Is there a canonical way to force cocotb to use python3 instead of python2 ?