Python different data type conversion

[Python3 data processing] Data conversion bytes/string/ASCII/GBK...

• string str
• character
• byte byte
• hexadecimal
• integer int
• ascii

bytes to integer
0xff 255

Convert hexadecimal string to int
ord()

int(hex(12), 16)    # 12
int('FF', 16)       # 255
int('FFEF', 16)     # 65519

 a=plotvalue.encode('gbk')
 print(type(a))
 tmp = int(a.hex(),16)

str to bytes

方法1
a=bytes(plotvalue,"gbk")
方法2
a=plotvalue.encode('gbk')