Implement custom power, equation, and counter functions

Added custom functions for power, equation, and counter.

Author: helinHarman

Week04/functions_Helin_Harman.py

@@ -0,0 +1,33 @@
+custom_power = lambda x=0, e=1: x**e
+
+
+# ------------------
+# custom_equation
+# ------------------
+def custom_equation(x: int = 0, y: int = 0, /, a: int = 1, b: int = 1, *, c: int = 1) -> float:
+    return (x**a + y**b) / c
+
+# -------------
+# fn_w_counter
+# -------------
+
+from typing import Tuple, Dict
+
+def fn_w_counter(_state={'total': 0, 'callers': {}}) -> Tuple[int, Dict[str,int]]:
+    _state['total'] += 1
+    caller = __name__
+    _state['callers'][caller] = _state['callers'].get(caller, 0) + 1
+    return _state['total'], _state['callers']
+
+
+#  custom_power test
+print(custom_power(2,3))  
+
+# custom_equation test
+print(custom_equation(2,3))       
+print(custom_equation(3,5,a=2,b=3,c=4)) 
+
+# fn_w_counter test
+for i in range(10):
+    fn_w_counter()
+print(fn_w_counter())  # (11, {'__main__': 11})