Python魔术函数，它如何工作？

Question

How does this magic function work (below) ie hex = '%032x' % self.int for some reason it turns the following value...

265631021230191344138857284998518456

into....

0033289ed88646a64b9fc63c808fd6b8

def __str__(self):
    hex = '%032x' % self.int
    return hex

But all this should actually do from my knowledge is append 032x to the end of the string 265631021230191344138857284998518456 , so whats going on? How does it do what it does?

Full code here

Answer 1

%x is a format code for hex. Your function is representing a decimal value in hex.

>>> hex(265631021230191344138857284998518456)
'0x33289ed88646a64b9fc63c808fd6b8'

The full format code

'%032x'

Means represent the value in hex and pad it with zeros on the left until it is 32 characters wide.