Python logical operators w3schools examples

Python logical operators w3schools examples

Here are some examples of Python's logical operators from W3Schools:

And Operator (and)

The and operator is used to combine two or more conditions. It returns True if all conditions are True.

Example:

x = 10
y = 20
print(x > 5 and y > 15) # Returns: True

Or Operator (or)

The or operator is used to combine two or more conditions. It returns True if at least one condition is True.

Example:

x = 10
y = 20
print(x < 5 or y > 15) # Returns: True

Not Operator (not)

The not operator is used to negate a condition. It returns the opposite of the condition.

Example:

x = 10
print(not x > 15) # Returns: False

Logical Operators with Variables

You can also use logical operators with variables, which allows you to create more complex conditions.

Example:

x = 10
y = 20
if (x > 5 and y > 10):
print("Both conditions are true")
else:
print("At least one condition is false")

Short-Circuit Evaluation

Python uses short-circuit evaluation for logical operators. This means that the second operand is only evaluated if the first operand is True.

Example:

x = 0
y = "Hello"
if (x > 5 and y[0]):
print("Both conditions are true")
else:
print("At least one condition is false")
The code above will print: At least one condition is false
Because x is not greater than 5, so the second operand y[0] is not evaluated.

In summary, Python's logical operators (and, or, and not) are used to create complex conditions that can be applied to variables. These operators follow short-circuit evaluation rules, which means that they only evaluate the second operand if the first operand is True. This allows for efficient and flexible programming.

What are operators in Python W3schools?

I'm happy to respond in English!

According to W3Schools, in Python, an operator is a symbol used to perform operations on values and expressions. In other words, operators are used to manipulate data and variables in your code.

Python provides various types of operators, including:

Example: x = 5; y = 3; print(x + y) (output: 8)

Example: x = 5; y = 3; print(x > y) (output: True)

Example: x = 5; y = 3; print(x > y and x != 0) (output: False)

Example: x = 5; x += 3; print(x) (output: 8)

Example: x = 5; y = 3; print(x & y) (output: 1)

Example: fruits = ['apple', 'banana']; print('apple' in fruits) (output: True)

Example: x = 5; y = 3; print(x is y) (output: False)

Example: print(2 ** 3) (output: 8)

In Python, these operators can be used in various combinations to create complex expressions and calculations. For example, you can use parentheses to group operations or use the precedence rules for each operator type.

Overall, understanding the different types of operators in Python is crucial for writing efficient, readable, and effective code!