refactor linter.py

linter.py

@@ -1,26 +1,64 @@
-with open('blogs-original.csv', 'r') as f:
-    file_content = f.read()
+import csv
 
-lines = file_content.split('\n')
 
-content = lines[0] + '\n'
+csv_file_path = 'blogs-original.csv'
 
-for line in lines[1:]:
-    line = line.strip()
-    if not line:
-        continue
+def check_tags(tags: str):
+    assert tags == tags.strip(), "leading/trailing whitespace"
+    assert not any([tag.startswith(' ') or tag.endswith(' ') for tag in tags.split(',')]), "leading/trailing whitespace in tags"
+    assert not any([tag == '' for tag in tags.split(',')]), "empty tag"
 
-    parts = line.split(',')
-    if len(parts) != 4:
-        continue
-    parts = [part.strip() for part in parts]
+    tags_list = tags.split('; ')
+    # print(tags_list)
+    assert not any([';' in tag for tag in tags_list]), "no trailing space after `;`"
+    assert not any([tag for tag in tags_list if tag != tag.strip()]), "leading/trailing whitespace in tags"
+    assert len(tags_list) == len(set(tags_list)), "duplicate tag(s)"
 
-    if parts[3]:
-        parts[3] = parts[3].strip().replace('；', ';')
-        tags = parts[3].split(';')
-        tags = [tag.strip() for tag in tags]
-        parts[3] = '; '.join([tag for tag in tags if tag])
-        content += ', '.join(parts) + '\n'
+def check_csv(csv_file_path):
+    with open(csv_file_path, mode='r', encoding='utf-8') as file:
+        reader = csv.DictReader(file,skipinitialspace=True,strict=True)
+        for row in reader:
+            print(row)
 
-with open('blogs-original.csv', 'w') as f:
-    f.write(content)
+            assert None not in row.values(), "None value"
+            assert ['Introduction', 'Address', 'RSS feed', 'tags'] == list(row.keys()), "incorrect column names/order"
+            assert None not in row, "incorrect number of , characters"
+            assert not any(['|' in value for value in row.values()]), "contains `|` character(s)"
+
+            Introduction = row['Introduction']
+            Address = row['Address']
+            RSS_feed = row['RSS feed']
+            tags = row['tags']
+
+            assert Introduction and Address, "empty value"
+            assert Introduction == Introduction.strip(), "leading/trailing whitespace"
+            assert Address == Address.strip(), "leading/trailing whitespace"
+            assert Introduction != Address, "Introduction and Address are the same"
+
+            assert not any(['#' in [Address, RSS_feed]]), "Address or RSS_feed contains `#` character(s)"
+
+            if not Address.endswith('/'):
+                pass
+                # print("Warning: Address does not end with `/`")
+
+            assert Address.startswith('http://') or Address.startswith('https://'), "Address does not start with `http(s)://`"
+
+            if RSS_feed:
+                assert RSS_feed.startswith('http://') or RSS_feed.startswith('https://'), "RSS feed does not start with `http(s)://`"
+                assert RSS_feed != Address, "RSS feed and Address are the same"
+
+            if tags:
+                check_tags(tags)
+
+def check_nnl(csv_file_path):
+    with open(csv_file_path, mode='r', encoding='utf-8') as file:
+        for i, line in enumerate(file, start=1):
+            assert line.endswith('\n'), f"Line {i} does not end with a newline"
+
+def main(csv_file_path):
+    check_csv(csv_file_path)
+    check_nnl(csv_file_path)
+
+
+if __name__ == "__main__":
+    main(csv_file_path)