From ec761d3e590aeeb6968cd85c4fdb4c4cf0438931 Mon Sep 17 00:00:00 2001
From: Jalil Guliyev <jalil4guliyev@gmail.com>
Date: Sun, 1 Nov 2026 20:41:48 +0300
Subject: [PATCH 1/2] Add custom power and equation functions

---
 Week04/functions_jalil_guliyev.py | 36 +++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 Week04/functions_jalil_guliyev.py

diff --git a/Week04/functions_jalil_guliyev.py b/Week04/functions_jalil_guliyev.py
new file mode 100644
index 00000000..67b35b81
--- /dev/null
+++ b/Week04/functions_jalil_guliyev.py
@@ -0,0 +1,36 @@
+
+custom_power = lambda x=0, /, e=1: x ** e
+
+
+def custom_equation(
+    x: int = 0, y: int = 0, /,
+    a: int = 1, b: int = 1, *, c: int = 1
+) -> float:
+    """Calculate the result of an equation.
+
+    :param x: First base.
+    :param y: Second base.
+    :param a: Exponent of x.
+    :param b: Exponent of y.
+    :param c: Divisor.
+    :return: The result of (x**a + y**b) / c.
+    """
+    if any(type(value) is not int for value in (x, y, a, b, c)):
+        raise TypeError("All parameters must be integers")
+
+    return (x ** a + y ** b) / c
+
+
+def fn_w_counter() -> (int, dict[str, int]):
+    if not hasattr(fn_w_counter, "counter"):
+        fn_w_counter.counter = 0
+        fn_w_counter.callers = {}
+
+    fn_w_counter.counter += 1
+    caller = __name__
+    fn_w_counter.callers[caller] = (
+        fn_w_counter.callers.get(caller, 0) + 1
+    )
+
+    return fn_w_counter.counter, fn_w_counter.callers.copy()
+  

From 06e57f11735b1af88e8b56ae92b07cdfb22f418b Mon Sep 17 00:00:00 2001
From: Jalil Guliyev <jalil4guliyev@gmail.com>
Date: Sun, 1 Nov 2026 20:47:08 +0300
Subject: [PATCH 2/2] Add performance decorator for tracking metrics

Implement a performance decorator to track function metrics.
---
 Week04/decorators_jalil_guliyev.py | 43 ++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 Week04/decorators_jalil_guliyev.py

diff --git a/Week04/decorators_jalil_guliyev.py b/Week04/decorators_jalil_guliyev.py
new file mode 100644
index 00000000..516495b1
--- /dev/null
+++ b/Week04/decorators_jalil_guliyev.py
@@ -0,0 +1,43 @@
+
+"""Week 04: Decorators homework."""
+
+import functools
+import time
+import tracemalloc
+
+
+def performance(func):
+    """Track cumulative calls, elapsed time and peak memory allocation."""
+
+    @functools.wraps(func)
+    def wrapper(*args, **kwargs):
+        tracing_started_here = not tracemalloc.is_tracing()
+
+        if tracing_started_here:
+            tracemalloc.start()
+
+        before_current, before_peak = tracemalloc.get_traced_memory()
+        start = time.perf_counter()
+
+        try:
+            return func(*args, **kwargs)
+
+        finally:
+            elapsed = time.perf_counter() - start
+            current, peak = tracemalloc.get_traced_memory()
+
+            allocated = max(0, peak - before_current)
+
+            performance.counter += 1
+            performance.total_time += elapsed
+            performance.total_mem += allocated
+
+            if tracing_started_here:
+                tracemalloc.stop()
+
+    return wrapper
+
+
+performance.counter = 0
+performance.total_time = 0.0
+performance.total_mem = 0