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number
 
Number data types store numeric values. Number objects are created when you assign a value to them.
For example −
var1 = 1
var2 = 10
 
You can delete a single object or multiple objects by using the del statement. For example −
del var
del var_a, var_b
 
Python supports four different numerical types −
int (signed integers)
long (long integers, they can also be represented in octal and hexadecimal)
float (floating point real values)
complex (complex numbers)

int

long

float

complex

10

51924361L

0

3.14j

100

-0x19323L

15.2

45.j

-786

0122L

-21.9

9.322e-36j

80

0xDEFABCECBDAECBFBAEl

32.3+e18

.876j

-490

535633629843L

-90

-.6545+0J

-0x260

-052318172735L

-3.254E+101

3e+26J

0x69

-4721885298529L

70.2-E12

4.53e-7j


 

Mathematical Functions

Python includes following functions that perform mathematical calculations

Function

Returns ( description )

abs(x)

The absolute value of x: the (positive) distance between x and zero.

ceil(x)

The ceiling of x: the smallest integer not less than x

cmp(x, y)

-1 if x < y, 0 if x == y, or 1 if x > y

exp(x)

The exponential of x: ex

fabs(x)

The absolute value of x.

floor(x)

The floor of x: the largest integer not greater than x

log(x)

The natural logarithm of x, for x> 0

log10(x)

The base-10 logarithm of x for x> 0 .

max(x1, x2,...)

The largest of its arguments: the value closest to positive infinity

min(x1, x2,...)

The smallest of its arguments: the value closest to negative infinity

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.

pow(x, y)

The value of x**y.

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.

sqrt(x)

The square root of x for x > 0

 

 

Random Number Functions

Random numbers are used for games, simulations, testing, security, and privacy applications. Python includes following functions that are commonly used.

Function

Description

choice(seq)

A random item from a list, tuple, or string.

randrange ([start,] stop [,step])

A randomly selected element from range(start, stop, step)

random()

A random float r, such that 0 is less than or equal to r and r is less than 1

seed([x])

Sets the integer starting value used in generating random numbers. Call this function before calling any other random module function. Returns None.

shuffle(lst)

Randomizes the items of a list in place. Returns None.

uniform(x, y)

A random float r, such that x is less than or equal to r and r is less than y

 

 

Trigonometric Functions

Function

Description

acos(x)

Return the arc cosine of x, in radians.

asin(x)

Return the arc sine of x, in radians.

atan(x)

Return the arc tangent of x, in radians.

atan2(y, x)

Return atan(y / x), in radians.

cos(x)

Return the cosine of x radians.

hypot(x, y)

Return the Euclidean norm, sqrt(x*x + y*y).

sin(x)

Return the sine of x radians.

tan(x)

Return the tangent of x radians.

degrees(x)

Converts angle x from radians to degrees.

radians(x)

Converts angle x from degrees to radians.

 

 

Mathematical Constants

The module also defines two mathematical constants −

Logical Operators

There are following logical operators supported by Python language. Assume variable a holds 10 and variable b holds 20 then
Used to reverse the logical state of its operand.

Constants

Description

pi

The mathematical constant pi.

e

The mathematical constant e.

 

 
         
 
 
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