cqlsh.py: change shebang to /usr/bin/env python3

[syuu1228]

To run python executables on scylla-python3, we need to specify /usr/bin/env python3 on shebang, otherwise the script run on /usr/bin/python3.

Fixes #97

[fruch]

LGTM

[fruch]

LGTM

[fruch]

@syuu1228

do we have confirmation it's fixes the issue ?

[yaronkaikov]

@syuu1228 please confirm it is fixing the issue, if it is let;s get it in

[syuu1228]

Here's the test result on local Rocky9 VM:

• before the patch applied

$ /opt/scylladb/share/cassandra/bin/cqlsh.py 

Python Cassandra driver not installed, or not on PYTHONPATH.
You might try "pip install cassandra-driver".

Python: /usr/bin/python3
Module load path: ['/opt/scylladb/share/cassandra/libexec', '/opt/scylladb/share/cassandra/bin', '/opt/scylladb/share/cassandra/libexec', '/etc/yum.repos.d', '/usr/lib64/python39.zip', '/usr/lib64/python3.9', '/usr/lib64/python3.9/lib-dynload', '/usr/lib64/python3.9/site-packages', '/usr/lib/python3.9/site-packages']

Error: No module named 'cassandra'

It says Python: /usr/bin/python3 since python path is hardcoded on shebang.

• after the patch applied

$ /opt/scylladb/share/cassandra/bin/cqlsh.py
Connected to  at 127.0.0.1:9042
[cqlsh 6.0.23.dev3+g86a280a | Scylla 6.2.0~dev-0.20240812.607abe96e864 | CQL spec 3.3.1 | Native protocol v4]
Use HELP for help.
cqlsh> 

It able to load cassndra module since it using scylla-python3.

$ ps ax|grep cqlsh
  51490 pts/0    Tl     0:00 /opt/scylladb/share/cassandra/bin/../../../python3/bin/python3 /opt/scylladb/python3/bin/../libexec/python3.12.bin -s /opt/scylladb/share/cassandra/bin/../libexec/cqlsh.py

Also, ps ax shows /opt/scylladb/python3/bin/python3 is running.

[fruch]

On which test we are seeing this failing ?

[roydahan]

@fruch can we merge it?

[fruch]

@fruch can we merge it?

We can even that I don't see it broken anywhere