minor code refactoring

wile_coyote/common/combine.py

@@ -5,7 +5,7 @@ import configparser
 import wile_coyote.common.constants
 
 
-def keys(cert_path, provider, key_path, outpath):
+def keys(cert_path, provider, key_path, out_path):
     """combine certificate, CA and private key"""
     if os.path.isdir("/etc/ssl/certs"):
         ssl_dir = "/etc/ssl/certs"
@@ -18,10 +18,9 @@ def keys(cert_path, provider, key_path, outpath):
     config.read(wile_coyote.common.constants.CRED_CONF, encoding="utf8")
     ca_file = config.get("ca", provider)
     ca_path = os.path.join(ssl_dir, ca_file)
-    file_names = [cert_path, ca_path, key_path]
 
-    with open(outpath, "w", encoding="utf-8") as outfile:
-        for fname in file_names:
-            with open(fname, "r", encoding="utf-8") as infile:
-                outfile.write(infile.read())
-        outfile.close()
+    with open(out_path, "w", encoding="utf-8") as out_file:
+        for fname in [cert_path, ca_path, key_path]:
+            with open(fname, "r", encoding="utf-8") as in_file:
+                out_file.write(in_file.read())
+        out_file.close()