Problem: Execution test hanging. Python runtime slow

It's a problem surfaced by another

The visible problem was that the new exection test were hanging, inside the runtime, during the import at the line
 from aleph.sdk.chains.remote import RemoteAccount

after some more investigative work, it was pin pointed to an inner import of eth_utils module (specifically eth_utils.network )

Second problem that made the first visible: in the runtime the pre-compiled bytecode, created during runtime creation in create_disk_image.sh was not used, which made the import of module slower. This surfaced the first problem. The cause of that second problem was that the init1.py code which run the user caude was not launched with the same optimization level as the pre-compiled bytecode and thus recompiled everything. (this is specified in the init1.py #! sheebang on the first line)

Solution: Compile the bytecode with the same optimisation level (-o 2 )
as during run

We haven't found out yet why the eth_utils.network import hang when it
is not precompiler. But this fix the test hanging issue

runtimes/aleph-debian-11-python/create_disk_image.sh

@@ -38,8 +38,11 @@ pip3 install 'fastapi~=0.103.1'
 echo "Pip installing aleph-client"
 pip3 install 'aleph-sdk-python==0.7.0'
 
-# Compile all Python bytecode
-python3 -m compileall -f /usr/local/lib/python3.9
+# Compile Python code to bytecode for faster execution
+# -o2 is needed to compile with optimization level 2 which is what we launch init1.py (`python -OO`)
+# otherwise they are not used
+python3 -m compileall -o 2 -f /usr/local/lib/python3.9
+
 
 echo "PubkeyAuthentication yes" >> /etc/ssh/sshd_config
 echo "PasswordAuthentication no" >> /etc/ssh/sshd_config

runtimes/aleph-debian-12-python/create_disk_image.sh

@@ -39,8 +39,10 @@ mkdir -p /opt/aleph/libs
 pip3 install --target /opt/aleph/libs 'aleph-sdk-python==0.9.0' 'fastapi~=0.109.2'
 
 # Compile Python code to bytecode for faster execution
-python3 -m compileall -f /usr/local/lib/python3.11
-python3 -m compileall -f /opt/aleph/libs
+# -o2 is needed to compile with optimization level 2 which is what we launch init1.py (`python -OO`)
+# otherwise they are not used
+python3 -m compileall -o 2 -f /usr/local/lib/python3.11
+python3 -m compileall -o 2 -f /opt/aleph/libs
 
 echo "PubkeyAuthentication yes" >> /etc/ssh/sshd_config
 echo "PasswordAuthentication no" >> /etc/ssh/sshd_config