Conversion between Python data types

Conversion between Python data types

##Function Description##repr(x)Convert object x to an expression stringeval(str)Use to evaluate a valid Python expression in a string and return an object tuple(s) Convert sequence s into a tuplelist(s)Convert sequence s into a listset(s)Convert to a variable setdict(d)Create a dictionary. d must be a sequence of (key, value) tuples. frozenset(s)Convert to immutable collectionchr(x)Convert an integer to a characterunichr( x)Convert an integer to Unicode characters##ord(x)hex(x)oct(x)

int(x [,base])	Convert x to an integer
long(x [,base] )	Convert x to a long integer
float(x)	Convert x to a floating point number
complex(real [,imag])	Create a complex number
str(x)	Convert object x to string
Convert a character to its integer value
Convert a Convert an integer to a hexadecimal string
Convert an integer to a Octal string

View variable data type:

a=3

import types

type(a)

int(a) #Convert to integer type

str(a) #Convert to string

Python math function

FunctionReturn value (description)abs(x) Returns the absolute value of the number, such as abs(-10) returns 10ceil(x)Return the upper integer of the number, such as math.ceil(4.1) returns 5cmp(x, y)If x y, return 1exp(x)returns e raised to the x power (ex), such as math. exp(1) returns 2.718281828459045fabs(x) returns the absolute value of the number, such as math.fabs(-10) returns 10.0floor(x)Returns the rounded integer of the number, such as math.floor(4.9) returns 4log(x)For example, math.log(math.e) returns 1.0, math.log(100,10) returns 2.0log10(x) returns The logarithm of x with base 10, such as math.log10(100) returns 2.0max(x1, x2,...)returns the given parameters The maximum value of , the parameter can be a sequence. min(x1, x2,...)Returns the minimum value of the given parameter, which can be a sequence. modf(x)Returns the integer part and decimal part of x. The numerical signs of the two parts are the same as x, and the integer part is expressed in floating point type. pow(x, y)x**y Value after operation. round(x [,n])Returns the rounded value of the floating point number x. If the n value is given, it represents the number of digits rounded to the decimal point. . sqrt(x)Returns the square root of the number x. The number can be negative and the return type is real number. For example, math.sqrt(4) returns 2+0jPython random number function

FunctionDescriptionchoice(seq) Randomly select an element from the elements of the sequence, such as random.choice(range(10)), from 0 to 9 Pick an integer at random. randrange ([start,] stop [,step])Get a random number from the set in the specified range, incremented by the specified base, the base is default The value is 1random()Randomly generates the next real number, which is in the range [0,1). seed([x])Change the seed of the random number generator. If you don't understand the principle, you don't have to set the seed specifically, Python will choose the seed for you. shuffle(lst)Randomly sort all elements of the sequenceuniform(x, y) Randomly generate the next real number, which is in the range [x, y]. The above article briefly discussing the conversion between Python data types is all the content shared by the editor. I hope it can give you a reference, and I also hope you will support it. Foot PHP Chinese website. For more articles related to conversion between Python data types, please pay attention to the PHP Chinese website!