CODEWITHSUNDEEP
python
varantir
varantir

Reputation: 6854

Str implemented in class not used

Let us assume I have a class which implements the str() function. When I now put an object of this class into a dictionary and use str() of the dictionary, it does not use this function! What did I do wrong?

class test(object):
    def __str__(self):
        return("I am a dork")
a = test()
print(a)
X = {0:a}
print(str(tuple(sorted(X.items()))))

which returns:

I am a dork
((0, <__main__.test object at 0x7fe5204ddbe0>),)

Obviously, the goal would be to have 

((0, 'I am a dork'),)

Upvotes: 1

Views: 35

Answers (2)

Jos&#233; Ricardo Pla
Jos&#233; Ricardo Pla

Reputation: 1043

Try with:

class test(object):
    def __str__(self):
        return("I am a dork")
    def __repr__(self):
        return("I am a dork too")

Here repr doc

Upvotes: 0

Martijn Pieters
Martijn Pieters

Reputation: 1124828

Containers in Python show representations, not string conversions. You need to implement object.__repr__() to influence the object representation.

Note that __str__ and __repr__ play different roles; the representation is there for debugging purposes, the __str__ string output for presentation. If __str__ is missing, __repr__ will be used, but not vice versa.

Upvotes: 3

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