Question

In Python 3.x what is the value of 4/2=?​

Answer 1

Answer:

ghjjkkkkknvdfjkklmnbvawrjkm sethjjj

Answer 2

Explanation:

.1. Using Python as a Calculator

Let’s try some simple Python commands. Start the interpreter and wait for the primary prompt, >>>. (It shouldn’t take long.)

3.1.1. Numbers

The interpreter acts as a simple calculator: you can type an expression at it and it will write the value. Expression syntax is straightforward: the operators +, -, * and / work just like in most other languages (for example, Pascal or C); parentheses (()) can be used for grouping. For example:

>>>

>>> 2 + 2

4

>>> 50 - 5*6

20

>>> (50 - 5*6) / 4

5.0

>>> 8 / 5 # division always returns a floating point number

1.6

The integer numbers (e.g. 2, 4, 20) have type int, the ones with a fractional part (e.g. 5.0, 1.6) have type float. We will see more about numeric types later in the tutorial.

Division (/) always returns a float. To do floor division and get an integer result (discarding any fractional result) you can use the // operator; to calculate the remainder you can use %:

>>>

>>> 17 / 3 # classic division returns a float

5.666666666666667

>>>

>>> 17 // 3 # floor division discards the fractional part

5

>>> 17 % 3 # the % operator returns the remainder of the division

2

>>> 5 * 3 + 2 # result * divisor + remainder

17

With Python, it is possible to use the ** operator to calculate powers 1:

>>>

>>> 5 ** 2 # 5 squared

25

>>> 2 ** 7 # 2 to the power of 7

128

The equal sign (=) is used to assign a value to a variable. Afterwards, no result is displayed before the next interactive prompt:

>>>

>>> width = 20

>>> height = 5 * 9

>>> width * height

900

If a variable is not “defined” (assigned a value), trying to use it will give you an error:

>>>

>>> n # try to access an undefined variable

Traceback (most recent call last):

File "<stdin>", line 1, in <module>

NameError: name 'n' is not defined