Div in Python

Div in Python

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what is // in python

In Python, // represents the floor division operator. This operator is used to perform integer division and return the quotient as an integer, effectively truncating any fractional part.

Here's a simple example:

a = 10
b = 3
result = a // b
print(result)  # Output: 3

In this example, a (10) is divided by b (3), and the result is rounded down to the nearest whole number. In Python 2.x, // would actually perform floor division, which means it would truncate any decimal part, regardless of whether the original result was an integer or not.

So, if you divide 10 by 3 in Python 2.x, using the // operator:

print(10 // 3)  # Output: 3

However, in Python 3.x, // still performs floor division, but it also takes into account whether the original result was an integer or not. For example:

print(10 // 3)  # Output: 3
print(10.0 // 3)  # Output: 3
print(-10 // 3)   # Output: -3
print(-10.0 // 3)  # Output: -3

In the case of negative numbers, the // operator rounds down to the nearest whole number, effectively "flooring" the result.

The / operator in Python is used for division and returns a floating-point value:

a = 10
b = 3
result = a / b
print(result)  # Output: 3.3333333333333335

In contrast, the // operator truncates any decimal part of the result:

a = 10
b = 3
result = a // b
print(result)  # Output: 3

So, to summarize:

Here's another example that shows how floor division works:

print(5 // 2)  # Output: 2
print(-5 // 2) # Output: -3
print(5.5 // 2)  # Output: 2
print(-5.5 // 2)  # Output: -3

As you can see, the // operator always rounds down to the nearest whole number.

In conclusion, in Python, the // operator is used for floor division (integer division), which returns an integer result. It truncates any decimal part of the original result and always rounds down to the nearest whole number.