ref(basic python jobs): merge generation of script and submission

The create_sbatch_script method is used nowhere else => No need to
seperate generation of job script from its submission

config.py

@@ -415,10 +415,11 @@ def submit(self, job_name, script, add_dep=None):
 
         return job_id
 
-    def create_sbatch_script(self, job_name):
-        """Create an sbatch script to launch jobs individually.
+    def submit_basic_python(self, job_name):
+        """Create an sbatch script to launch basic python jobs individually.
         Use run_chain.py arguments to submit those jobs.
         """
+        # Build job script
         walltime = getattr(self, 'walltime', {}).get(job_name, "00:30:00")
         script_lines = [
             '#!/usr/bin/env bash',
@@ -442,7 +443,8 @@ def create_sbatch_script(self, job_name):
         with open(job_file, mode='w') as job_script:
             job_script.write('\n'.join(script_lines))
 
-        return job_file
+        # Submit job
+        self.submit(job_name, job_file)
 
     def wait_for_previous(self):
         """Wait for all jobs of the previous stage to be finished.

run_chain.py

@@ -170,7 +170,7 @@ def run_chunk(cfg, force, resume):
                 print(f'    └── Skipping "{job_name}" job')
                 skip = True
             else:
-                print(f'    └── Starting "{job_name}" job')
+                print(f'    └── Submitting "{job_name}" job')
 
                 # Logfile settings
                 cfg.logfile = cfg.log_working_dir / job_name
@@ -179,8 +179,7 @@ def run_chunk(cfg, force, resume):
                 # Submit the job
                 job = getattr(jobs, job_name)
                 if hasattr(job, 'BASIC_PYTHON_JOB') and job.BASIC_PYTHON_JOB:
-                    script = cfg.create_sbatch_script(job_name)
-                    cfg.submit(job_name, script)
+                    cfg.submit_basic_python(job_name)
                 else:
                     job.main(cfg)