Overview:
- The "or" keyword implements the logical OR operation in Python.
- In mathematics the OR operator returns True, if at least one of the operands evaluate to True.
- In electronics the OR Gate implements the logical OR and the input/output are described by the truth table given below.
- The "or" operator in Python returns the first operand if it is True else the second operand.
Truth table of the or Operator:
|
Operand 1 |
Operand 2 |
Result |
|
True |
True |
True |
|
False |
True |
True |
|
True |
False |
True |
|
False |
False |
False |
The Ven Diagram of the "or" operator:
Example 1:
|
# Example python program using or operator
def addToBasket(): print("Item added successfully")
def doNotAddToBasket(): print("Can not add the item")
fish1 = None fish2 = "Tuna" validItem = fish1 or fish2
if validItem: print(validItem) addToBasket() else: donotAddToBasket()
|
Output:
|
Tuna Item added successfully |
Example 2:
|
# Example python program using or operator def buy(): print("Buy order placed")
def sell(): print("Sell order placed")
indicator1 = 10 indicator2 = 1.5
if indicator1 >= 10 or indicator2 < 1: buy()
else: sell() |
Output:
|
Buy order placed |