Python tutorials: Allow skipping venv setup (#680)

closes #679

Author: MakisH

changelog-entries/680.md

@@ -0,0 +1 @@
+- Added the `PRECICE_TUTORIALS_NO_VENV` environment variable to skip the setup of a Python venv in the run.sh scripts of Python-related tutorials [#680](https://github.com/precice/tutorials/pull/680). Use as `set PRECICE_TUTORIALS_NO_VENV && ./run.sh`.

channel-transport-reaction/chemical-fenics/run.sh

@@ -4,9 +4,12 @@ set -e -u
 . ../../tools/log.sh
 exec > >(tee --append "$LOGFILE") 2>&1
 
-python3 -m venv --system-site-package .venv
-. .venv/bin/activate
-pip install -r requirements.txt && pip freeze > pip-installed-packages.log
+if [ ! -v PRECICE_TUTORIALS_NO_VENV ]
+then
+    python3 -m venv --system-site-package .venv
+    . .venv/bin/activate
+    pip install -r requirements.txt && pip freeze > pip-installed-packages.log
+fi
 
 python3 chemical-reaction-advection-diffusion.py
 

channel-transport-reaction/fluid-fenics/run.sh

@@ -4,10 +4,12 @@ set -e -u
 . ../../tools/log.sh
 exec > >(tee --append "$LOGFILE") 2>&1
 
-python3 -m venv --system-site-package .venv
-. .venv/bin/activate
-pip install -r requirements.txt && pip freeze > pip-installed-packages.log
-
+if [ ! -v PRECICE_TUTORIALS_NO_VENV ]
+then
+    python3 -m venv --system-site-package .venv
+    . .venv/bin/activate
+    pip install -r requirements.txt && pip freeze > pip-installed-packages.log
+fi
 
 python3 fluid.py
 

channel-transport/fluid-nutils/run.sh

@@ -4,9 +4,13 @@ set -e -u
 . ../../tools/log.sh
 exec > >(tee --append "$LOGFILE") 2>&1
 
-python3 -m venv .venv
-. .venv/bin/activate
-pip install -r requirements.txt && pip freeze > pip-installed-packages.log
+if [ ! -v PRECICE_TUTORIALS_NO_VENV ]
+then
+    python3 -m venv .venv
+    . .venv/bin/activate
+    pip install -r requirements.txt && pip freeze > pip-installed-packages.log
+fi
+
 python3 fluid.py
 
 close_log

channel-transport/transport-nutils/run.sh

@@ -4,9 +4,13 @@ set -e -u
 . ../../tools/log.sh
 exec > >(tee --append "$LOGFILE") 2>&1
 
-python3 -m venv .venv
-. .venv/bin/activate
-pip install -r requirements.txt && pip freeze > pip-installed-packages.log
+if [ ! -v PRECICE_TUTORIALS_NO_VENV ]
+then
+    python3 -m venv .venv
+    . .venv/bin/activate
+    pip install -r requirements.txt && pip freeze > pip-installed-packages.log
+fi
+
 python3 transport.py "$@"
 
 close_log

elastic-tube-1d/fluid-python/run.sh

@@ -4,9 +4,12 @@ set -e -u
 . ../../tools/log.sh
 exec > >(tee --append "$LOGFILE") 2>&1
 
-python3 -m venv .venv
-. .venv/bin/activate
-pip install -r requirements.txt && pip freeze > pip-installed-packages.log
+if [ ! -v PRECICE_TUTORIALS_NO_VENV ]
+then
+    python3 -m venv .venv
+    . .venv/bin/activate
+    pip install -r requirements.txt && pip freeze > pip-installed-packages.log
+fi
 
 python3 ./FluidSolver.py ../precice-config.xml
 

elastic-tube-1d/solid-python/run.sh

@@ -4,9 +4,12 @@ set -e -u
 . ../../tools/log.sh
 exec > >(tee --append "$LOGFILE") 2>&1
 
-python3 -m venv .venv
-. .venv/bin/activate
-pip install -r requirements.txt && pip freeze > pip-installed-packages.log
+if [ ! -v PRECICE_TUTORIALS_NO_VENV ]
+then
+    python3 -m venv .venv
+    . .venv/bin/activate
+    pip install -r requirements.txt && pip freeze > pip-installed-packages.log
+fi
 
 python3 ./SolidSolver.py ../precice-config.xml
 

elastic-tube-3d/solid-fenics/run.sh

@@ -4,8 +4,11 @@ set -e -u
 . ../../tools/log.sh
 exec > >(tee --append "$LOGFILE") 2>&1
 
-python3 -m venv --system-site-package .venv
-. .venv/bin/activate
-pip install -r requirements.txt && pip freeze > pip-installed-packages.log
+if [ ! -v PRECICE_TUTORIALS_NO_VENV ]
+then
+    python3 -m venv --system-site-package .venv
+    . .venv/bin/activate
+    pip install -r requirements.txt && pip freeze > pip-installed-packages.log
+fi
 
 python3 solid.py

flow-around-controlled-moving-cylinder/controller-fmi/run.sh

@@ -15,9 +15,12 @@ if [ ! -f PIDcontroller.fmu ]; then
   cd ../../
 fi
 
-python3 -m venv .venv
-. .venv/bin/activate
-pip install -r requirements.txt && pip freeze > pip-installed-packages.log
+if [ ! -v PRECICE_TUTORIALS_NO_VENV ]
+then
+    python3 -m venv .venv
+    . .venv/bin/activate
+    pip install -r requirements.txt && pip freeze > pip-installed-packages.log
+fi
 
 fmiprecice ./fmi-settings.json ./precice-settings.json
 

flow-around-controlled-moving-cylinder/solid-python/run.sh

@@ -4,9 +4,12 @@ set -e -u
 . ../../tools/log.sh
 exec > >(tee --append "$LOGFILE") 2>&1
 
-python3 -m venv .venv
-. .venv/bin/activate
-pip install -r requirements.txt && pip freeze > pip-installed-packages.log
+if [ ! -v PRECICE_TUTORIALS_NO_VENV ]
+then
+    python3 -m venv .venv
+    . .venv/bin/activate
+    pip install -r requirements.txt && pip freeze > pip-installed-packages.log
+fi
 
 python3 solid.py ../precice-config.xml