make open encoding explicit

bench/client.py

@@ -186,8 +186,8 @@ class Client(subprocess.Popen):
                 'err': err_file,
                 'host': host
             }))
-        self.fout = open(out_file, 'w')
-        self.ferr = open(err_file, 'w')
+        self.fout = open(out_file, 'w', encoding='utf-8')
+        self.ferr = open(err_file, 'w', encoding='utf-8')
 
         super().__init__(cmd.split(),
                          stdout=self.fout,

bench/coordinator.py

@@ -16,15 +16,13 @@ class Coordinator(subprocess.Popen):
         self.fout = subprocess.DEVNULL
         self.ferr = subprocess.DEVNULL
         if out_file:
-            self.fout = open(out_file, 'w')
+            self.fout = open(out_file, 'w', encoding='utf-8')
         if err_file:
-            self.ferr = open(err_file, 'w')
+            self.ferr = open(err_file, 'w', encoding='utf-8')
 
         cmd = f'{COORDINATOR_EXE} {nclients}'
         log.debug('Creating coordinator object with cmd: %s', cmd)
-        super().__init__(cmd.split(),
-                         stdout=self.fout,
-                         stderr=self.ferr)
+        super().__init__(cmd.split(), stdout=self.fout, stderr=self.ferr)
 
     def __enter__(self):
         log.debug('Start coordinator')

bench/emper.py

@@ -389,7 +389,7 @@ def prepare_client(data_dir: Path):
     """Prepare and build the special emper variant for the client"""
     client_checkout = get_commit_id(REPO, CLIENT_CHECKOUT)
 
-    with open(data_dir / 'desc.yml', 'a') as desc_file:
+    with open(data_dir / 'desc.yml', 'a', encoding='utf-8') as desc_file:
         print(f'client_commit: {client_checkout}', file=desc_file)
         # print(f'client_cmd: {CLIENT_CMD}', file=desc_file)
 
@@ -493,7 +493,8 @@ def prepare_flavors(data_dir: Path,
             commit_ish=desc.get('checkout', DEFAULT_CHECKOUT))
         meson_options = desc.get("meson_options", "")
 
-        with open(flavor_dir / 'desc.yml', 'w') as flavor_desc_file:
+        with open(flavor_dir / 'desc.yml', 'w',
+                  encoding='utf-8') as flavor_desc_file:
             print(f'cmd: {server_cmd}', file=flavor_desc_file)
             print(f'commit: {checkout}', file=flavor_desc_file)
             print(f'meson_options: {meson_options}', file=flavor_desc_file)

bench/server.py

@@ -56,8 +56,8 @@ class Server(subprocess.Popen):
                 'host': host or 'localhost'
             }))
 
-        self.fout = open(out_file, 'w')
-        self.ferr = open(err_file, 'w')
+        self.fout = open(out_file, 'w', encoding='utf-8')
+        self.ferr = open(err_file, 'w', encoding='utf-8')
 
         server_env = prepare_env(env or {})
 

eval.py

@@ -45,7 +45,7 @@ CLIENT_SEPARATION_TIME = 10
 def write_desc(data_dir):
     """Write a YAML description of the evaluation into result_dir"""
     desc_file_path = data_dir / 'desc.yml'
-    with open(desc_file_path, 'w') as desc_file:
+    with open(desc_file_path, 'w', encoding='utf-8') as desc_file:
         print(f'start: {start_time.isoformat()}', file=desc_file)
         print(f'args: {ARGS}', file=desc_file)
         print(f'host: {HOST}', file=desc_file)
@@ -92,7 +92,7 @@ def summarize(results: Mapping[str, Sequence[Sequence[BenchResult]]]):
         summary += f'{result.name}: {amount}\n'
 
     print(summary)
-    with open(DATA_DIR / 'summary.txt', 'w') as summary_file:
+    with open(DATA_DIR / 'summary.txt', 'w', encoding='utf-8') as summary_file:
         print(summary, file=summary_file)
 
 

plot.py

@@ -177,7 +177,7 @@ $table};
     tikz += tail.substitute(y_label=y_label,
                             title=result_dir.replace('_', '\\_'))
 
-    with open(output_path, 'w') as output_file:
+    with open(output_path, 'w', encoding='utf-8') as output_file:
         print(tikz, file=output_file)