You need to import modules (built-in function)
| function | Return Value (description) |
|---|---|
| abs(x) | Returns the absolute value |
| max(x1, x2,...) | The maximum value, the parameter may be a sequence. |
| (x1, x2, ...) | The minimum value, the parameter may be a sequence. |
| pow (x, y) | power |
| round(x [,n]) | Rounding, n represents rounded to the digits after the decimal point. |
math module
You need to import math module, and then math. Constants way name / function name called.
| Constants, functions | Return Value (description) |
|---|---|
| e | Mathematical constant e |
| pi | Fr. |
| sin (x), cos (x), tan (x) |
x is in radians |
| degrees(x) |
Radian angle turn |
| radians(x) | Degrees to radians |
| pow (x, y) | x power of y |
| exp(x) | e power of x |
| sqrt(x) | Open square arithmetic |
| fabs(x) | Absolute value |
| fmod | Modulo remainder |
| fsum(seq) | Sequence summing |
| ceil(x) | Improvement ToSei |
| floor | Rounding down |
| log(x,base) | Logarithm to the base as a bottom, x is |
| log2(x) | Base 2 logarithm, x is |
| log10(x) | Logarithm to the base 10, x is |
Sequence refers to a list (List), tuples (Tuple), string (String).
Sequence, is ordered, the set (Set) is a disorder, not a sequence.
Above functions will not change the value of the parameter itself.
random module
We need to import the random module, and then to call the module name.
| function | Description (return value) |
| random() | A random number between [0,1) |
| randint(start,end) | [Start, end] on an integer, comprising max. By then you can multiply and divide to get a float. |
| uniform(start,end) | A real number on [start, end] |
| randrange(start,end,step) | It returns a random number in the specified number. For example (0,100,5), at 0,5,10, ..., 100 returns a random number. |
| choice(seq) | A random number sequence returned from |
| shuffle(seq) | The random ordering of the sequence (upset) |
| seed(x) | Set seed, defaults to the current time |