Electric power

electronics/electric_power.py

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+# https://en.m.wikipedia.org/wiki/Electric_power
+
+
+def electric_power(voltage: float, current: float, power: float) -> float:
+    """
+    This function can calculate any one of the three (voltage, current, power), fundamental value of electrical system.
+    examples are below:
+    >>> electric_power(voltage=0, current=2, power=5)
+    {'voltage': 2.5}
+    >>> electric_power(voltage=2, current=2, power=0)
+    {'power': 4.0}
+    >>> electric_power(voltage=-2, current=3, power=0)
+    {'power': 6.0}
+    """
+    if (voltage, current, power).count(0) != 1:
+        raise ValueError("Only one argument must be 0")
+    elif power < 0:
+        raise ValueError("Power cannot be negative in any electrical/electronics system")
+    elif voltage == 0:
+        return {'voltage': power / current}
+    elif current == 0:
+        return {'current': power / voltage}
+    elif power == 0:
+        # I created this variable because i want to remove negative sign from the power value
+        result = (float(voltage * current))
+        if result < 0:
+            result = result * -1
+        return {'power': result}
+
+
+if __name__ == '__main__':
+    import doctest
+
+    doctest.testmod()