# Python – Numbers

Python – Number, Data sorts shop numeric values. They are immutable records kinds, approach that converting the value of quite a number information type results in a newly allotted object. Number gadgets are created while you assign a value to them. For instance −
``````var1 = 1
var2 = 10``````
You also can delete the connection with more than a few object with the aid of the use of the del declaration. The syntax of the del statement is −
``del var1[,var2[,var3[....,varN]]]]``
You can delete a single item or a couple of items via using the del assertion. For example −
``````del var
del var_a, var_b``````
Python supports four special numerical kinds −
• int (signed integers) − They are frequently called just integers or ints, are nice or negative whole numbers with no decimal factor.
• Lengthy (lengthy integers ) − Also called longs, they’re integers of limitless size, written like integers and followed by means of an uppercase or lowercase L.
• Flow (floating point real values) − Also referred to as floats, they represent real numbers and are written with a decimal factor dividing the integer and fractional elements. Floats can also be in medical notation, with E or e indicating the power of 10 (2.5e2 = 2.5 x 102 = 250).
• Complex (complex numbers) − are of the form a + bJ, wherein a and b are floats and J (or j) represents the square root of -1 (which is an imaginary quantity). The actual part of the number is a, and the imaginary element is b. Complex numbers are not used lots in Python programming.

### Examples

Here are some examples of numbers
int long float complex
10 51924361L 0.0 3.14j
100 -0x19323L 15.20 45.j
-786 0122L -21.9 9.322e-36j
080 0xDEFABCECBDAECBFBAEL 32.3+e18 .876j
-0490 535633629843L -90. -.6545+0J
-0x260 -052318172735L -32.54e100 3e+26J
0x69 -4721885298529L 70.2-E12 4.53e-7j
• Python lets in you to use a lowercase L with long, but it’s far endorsed which you use most effective an uppercase L to keep away from confusion with the #1. Python presentations lengthy integers with an uppercase L.
• A complicated wide variety includes an ordered pair of real floating point numbers denoted through a + bj, wherein a is the real component and b is the imaginary a part of the complex range.

### Number Type Conversion

Python converts numbers internally in an expression containing mixed kinds to a not unusual kind for evaluation. But from time to time, you need to coerce more than a few explicitly from one type to some other to fulfill the requirements of an operator or function parameter.
• Type int(x) to transform x to a undeniable integer.
• Type lengthy(x) to convert x to a protracted integer.
• Type glide(x) to convert x to a floating-point wide variety.
• Type complex(x) to transform x to a complicated range with real part x and imaginary component zero.
• Type complex(x, y) to convert x and y to a complex wide variety with real part x and imaginary component y. X and y are numeric expressions

## Mathematical Functions

Python consists of following functions that perform mathematical calculations.
Sr.No. Function & Returns ( description )
1 abs(x)The absolute value of x: the (positive) distance between x and zero.
2 ceil(x)The ceiling of x: the smallest integer not less than x
3 cmp(x, y)-1 if x < y, 0 if x == y, or 1 if x > y
4 exp(x)The exponential of x: ex
5 fabs(x)The absolute value of x.
6 floor(x)The floor of x: the largest integer not greater than x
7 log(x)The natural logarithm of x, for x> 0
8 log10(x)The base-10 logarithm of x for x> 0.
9 max(x1, x2,…)The largest of its arguments: the value closest to positive infinity
10 min(x1, x2,…)The smallest of its arguments: the value closest to negative infinity
11 modf(x)The fractional and integer parts of x in a two-item tuple. Both parts have the same sign as x. The integer part is returned as a float.
12 pow(x, y)The value of x**y.
13 round(x [,n])x rounded to n digits from the decimal point. Python rounds away from zero as a tie-breaker: round(0.5) is 1.0 and round(-0.5) is -1.0.
14 sqrt(x)The square root of x for x > 0

## Random Number Functions

Python – Number, Random numbers are used for games, simulations, testing, safety, and privateness applications. Python consists of following functions that are typically used.
Sr.No. Function & Description
1 choice(seq)A random item from a list, tuple, or string.
2 randrange ([start,] stop [,step])A randomly selected element from range(start, stop, step)
3 random()A random float r, such that 0 is less than or equal to r and r is less than 1
4 seed([x])Sets the integer starting value used in generating random numbers. Call this function before calling any other random module function. Returns None.
5 shuffle(lst)Randomizes the items of a list in place. Returns None.
6 uniform(x, y)A random float r, such that x is less than or equal to r and r is less than y

## Python – Number, Trigonometric Functions

Python includes following functions that carry out trigonometric calculations.
Sr.No. Function & Description
1 acos(x)Return the arc cosine of x, in radians.
2 asin(x)Return the arc sine of x, in radians.
3 atan(x)Return the arc tangent of x, in radians.
4 atan2(y, x)Return atan(y / x), in radians.
5 cos(x)Return the cosine of x radians.
6 hypot(x, y)Return the Euclidean norm, sqrt(x*x + y*y).
7 sin(x)Return the sine of x radians.
8 tan(x)Return the tangent of x radians.
9 degrees(x)Converts angle x from radians to degrees.