Question

python str和repr的区别

Answer 1

这个简单str是显示给用户用的repr是给机器用的。classA(object):def__str__(self):print"thisisAclass"def__repr__(self):print"thisisreprfunc"a=A()比如printa调用的是a的__str__方法而如果你在python解释器里直接敲a后回车，调用的是a.__repr__()方法

Answer 2

The str() function is meant to return representations of values which are fairly
human-readable, while repr() is meant to generate representations which can be read by
the interpreter (or will force a SyntaxError if there is not equivalent syntax).
str是给人看的，repr是给编译器看的，同时eval(repr(obj))还可以得到obj。