Output is now much more compact allowing for easier comparison of tables with lots of columns. Ex: even just 1 change in a table with 200 columns would output more than 400 lines before

Author: datsom1

db_diff/__init__.py

@@ -141,24 +141,22 @@ def human_text(result, key=None, current=None, extras=None):
             summary.append(fragment + "\n")
         change_blocks = []
         for details in result["changed"]:
-            block = []
-            block.append("  {}: {}".format(key, details["key"]))
-            for field, (prev_value, current_value) in details["changes"].items():
-                block.append(
-                    '    {}: "{}" => "{}"'.format(field, prev_value, current_value)
-                )
+            # Compact: key: field1: "old" => "new", field2: "old" => "new", ...
+            changes_str = ", ".join(
+                f'{field}: "{prev}" => "{curr}"'
+                for field, (prev, curr) in details["changes"].items()
+            )
+            block = [f"  {key}: {details['key']} | {changes_str}"]
             if extras:
                 current_item = current[details["key"]]
                 block.append(human_extras(current_item, extras))
-            block.append("")
-            change_blocks.append("\n".join(block))
             if details.get("unchanged"):
-                block = []
-                block.append("    Unchanged:")
-                for field, value in details["unchanged"].items():
-                    block.append('      {}: "{}"'.format(field, value))
-                block.append("")
-                change_blocks.append("\n".join(block))
+                unchanged_str = ", ".join(
+                    f'{field}: "{value}"'
+                    for field, value in details["unchanged"].items()
+                )
+                block.append(f"    Unchanged: {unchanged_str}")
+            change_blocks.append("\n".join(block))
         summary.append("\n".join(change_blocks))
     if result["added"]:
         fragment = "{} rows added".format(len(result["added"]))
@@ -171,7 +169,7 @@ def human_text(result, key=None, current=None, extras=None):
             if extras:
                 to_append += "\n" + human_extras(row, extras)
             rows.append(to_append)
-        summary.append("\n\n".join(rows))
+        summary.append("\n".join(rows))
         summary.append("")
     if result["removed"]:
         fragment = "{} rows removed".format(len(result["removed"]))
@@ -184,16 +182,14 @@ def human_text(result, key=None, current=None, extras=None):
             if extras:
                 to_append += "\n" + human_extras(row, extras)
             rows.append(to_append)
-        summary.append("\n\n".join(rows))
+        summary.append("\n".join(rows))
         summary.append("")
     return (", ".join(title) + "\n\n" + ("\n".join(summary))).strip()
 
 
 def human_row(row, prefix=""):
-    bits = []
-    for key, value in row.items():
-        bits.append("{}{}: {}".format(prefix, key, value))
-    return "\n".join(bits)
+    # Compact: key1=value1, key2=value2, ...
+    return prefix + ", ".join(f"{k}={v}" for k, v in row.items())
 
 
 def human_extras(row, extras):