How to use int function in python

#int() function is used to convert a string or number into an integer. Next, this article will introduce you to the relevant knowledge of the int() function in python. Friends who are interested should take a look together

int(x, [base])

Function:

The function is to convert a number or base type string into an integer.

Function prototype:

int(x=0)

int(x, base=10), the default value of base is 10, which means that base is not specified value, the function treats x as decimal.

Applicable Python version:

Python2.x

Python3.x

Note:

1. x can be a number or a string, But after base is assigned, x can only be a string

2. When x is used as a string, it must be of base type, that is to say, when x becomes a number, it must be represented in base base

Code example:

1. When x is a number:

int(3.14)      # 3
int(2e2)       # 200
int(100, 2)     # 出错，base 被赋值后函数只接收字符串

2. When x is a string:

int('23', 16)   # 35
int('Pythontab', 8)   # 出错，Pythontab不是个8进制数

3. The possible value range of base is 2~ 36, including all English letters (not case sensitive), F in hexadecimal represents 15, then G will represent 16 in decimal, and so on....Z represents in thirty hexadecimal 35

int('FZ', 16)   # 出错，FZ不能用十六进制表示
int('FZ', 36)   # 575

4. The string 0x can appear in hexadecimal and is regarded as a hexadecimal symbol. Similarly, 0b can appear in binary and is regarded as a number 0 and a letter. x

int('0x10', 16) # 16，0x是十六进制的符号
int('0x10', 17) # 出错，'0x10'中的 x 被视作英文字母 x
int('0x10', 36) # 42804，36进制包含字母 x

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