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+---
+title: KPI Backend Development
+---
+
+## Code style
+
+- Always run the black autoformatter on new and modified code. KPI has one custom rule set, prefer `'` over `"`.
+- Avoid unnecessary branching if statements when possible. For example, break early.
+
+Bad
+
+```python
+def foo():
+  if is_ok:
+    do_the_thing()
+```
+
+Good
+
+```python
+def foo():
+  if not is_ok:
+    return
+
+  do_the_thing()
+```
+
+- Avoid unnecessary Django migrations. New pull requestions should contain no more than 1 migration, unless necessary.
+