Don't fetch licenses already found

get_licenses.py

@@ -42,14 +42,19 @@ def main():
     session.mount("http://", adapter)
     session.mount("https://", adapter)
 
+    # Get the already fetched repositories if they exist
+    fetched_repos = set()
+    if os.path.exists("licenses.json"):
+        for line in open("licenses.json", "r"):
+            obj = json.loads(line)
+            fetched_repos.add(obj["repository"])
+
     with open("repos.csv", "r") as csvfile:
         # Count number of rows and reset
         reader = csv.DictReader(csvfile)
-        repos = set(row["repository"] for row in reader)
+        repos = set(row["repository"].split("/", maxsplit=1)[1] for row in reader) - fetched_repos
 
         for repo in tqdm.tqdm(repos):
-            # Remove github.com/ from the beginning and fetch the license
-            repo = repo.split("/", maxsplit=1)[1]
             license = get_license(session, repo)
             obj = {"repository": repo, "license": license}
             json.dump(obj, sys.stdout)