what is the difference between "&" and "and" in Python? [duplicate]

Question

The first code gives True but the second gives an error saying

TypeError: unsupported operand type(s) for &: 'str' and 'int'

What is the difference between & and and operator in Python? Isn't it the same?

student = "Justin"

first code

print(student == "Justin" and 1 == 1)

second code

print(student == "Justin" & 1 == 1)

and is a boolean and, & is a bitwise and, and it had a higher precedence — juanpa.arrivillaga
– juanpa.arrivillaga, Commented May 22, 2021 at 1:05
A good explanation geeksforgeeks.org/difference-between-and-and-in-python — sagar1025
– sagar1025, Commented May 22, 2021 at 1:09

Tuan Chau · Accepted Answer · 2021-05-22 01:06:12Z

12

& is the bit-AND operator.

1 & 1 = 1
3 & 2 = 2
2 & 1 = 0

while and is the boolean operator.

You can use & for boolean expression and get correct answer since True is equivalent to 1 and False is 0, 1 & 0 = 0. 0 is equivalent to False and Python did a type casting to Boolean. That's why you get boolean result when using & for booleans

answered May 22, 2021 at 1:06

Tuan Chau

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2 Comments

Tuan Chau Over a year ago

In python, you can also customize the operator for a class. For example, adding def __and__(...) to Foo class, you can use Foo() & something

juanpa.arrivillaga Over a year ago

there is no type casting...

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