Add docstring for get_repo_url, use EAFPlc/eafp

1 files changed, 6 insertions, 5 deletions

diff --git a/ybd/repos.py b/ybd/repos.py
index 0a24b6b..5239cc1 100644
--- a/ybd/repos.py
+++ b/ybd/repos.py
@@ -38,11 +38,12 @@ else:
 
 
 def get_repo_url(repo):
-    if repo:
-        for alias, url in app.config.get('aliases', {}).items():
-            repo = repo.replace(alias, url)
-        if repo[:4] == "http" and not repo.endswith('.git'):
-            repo = repo + '.git'
+    '''Takes a repository url and returns a normalized version with the
+       aliases replaced with their values.'''
+    for alias, url in app.config.get('aliases', {}).items():
+        repo = repo.replace(alias, url)
+    if repo.startswith("http") and not repo.endswith('.git'):
+        repo = repo + '.git'
     return repo